{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-16T02:20:54Z",
  "source": "Assay Systems register, https://assay-systems.com/register/",
  "access_notice": "On 15 November 2026, automated access to assay-systems.com closes. After that date, access is available only under a paid annual subscription contract. Contact: contact@assay-systems.com",
  "data": {
    "id": "ASY-UK-0V24D3D1CM",
    "type": "line",
    "country": "uk",
    "name": "Windows, doors and related items: United Kingdom public contracts since 2024",
    "url": "https://assay-systems.com/register/uk/line/windows-doors-and-related-items/",
    "summary": "276 award notices, 187 suppliers in the line windows, doors and related items, from the Contracts Finder register.",
    "text": [
      "Since January 2024 the line carries 276 award notices from 153 buyers. 187 suppliers share it.",
      "153 in 2024. 84 in 2025. 39 in the first 8 months of 2026.",
      "73 of them had no award notice in the register from January 2022 to 2023.",
      "Names every buyer behind the figures and, for each award notice, the supplier, the award date, the notice number and the value where one is disclosed, and the notices behind every figure.",
      "Share of the line held by each of its largest suppliers, by number of award notices, in the Contracts Finder register."
    ],
    "records": [
      {
        "name": "all lines",
        "url": "https://assay-systems.com/register/uk/"
      },
      {
        "name": "Joedan Manufacturing (UK) Ltd t/a Wessex Window Systems",
        "url": "https://assay-systems.com/register/uk/joedan-manufacturing-uk-ltd-t-a-wessex-window-systems/"
      },
      {
        "name": "3D Aluminium",
        "url": "https://assay-systems.com/register/uk/3d-aluminium/"
      },
      {
        "name": "Hazlemere Window Company Limited",
        "url": "https://assay-systems.com/register/uk/hazlemere-window-company-limited/"
      },
      {
        "name": "Harmony Fire Ltd",
        "url": "https://assay-systems.com/register/uk/harmony-fire/"
      },
      {
        "name": "NATIONWIDE WINDOWS LIMITED",
        "url": "https://assay-systems.com/register/uk/nationwide-windows-limited/"
      },
      {
        "name": "CLC Contractors Limited",
        "url": "https://assay-systems.com/register/uk/clc-contractors/"
      },
      {
        "name": "Kingfisher UPVC Windows & Doors Ltd",
        "url": "https://assay-systems.com/register/uk/kingfisher-upvc-windows-doors-ltd/"
      },
      {
        "name": "R and B Decorators and Refurbishment",
        "url": "https://assay-systems.com/register/uk/r-b-decorators-refurbishment/"
      },
      {
        "name": "Bell Group Limited",
        "url": "https://assay-systems.com/register/uk/bell/"
      },
      {
        "name": "Sovereign Group Limited",
        "url": "https://assay-systems.com/register/uk/sovereign/"
      },
      {
        "name": "T COLEBORN AND SON LIMITED",
        "url": "https://assay-systems.com/register/uk/t-coleborn-son/"
      },
      {
        "name": "ABCA Systems Limited",
        "url": "https://assay-systems.com/register/uk/abca-systems/"
      },
      {
        "name": "ANGLIAN WINDOWS LIMITED",
        "url": "https://assay-systems.com/register/uk/anglian-windows-limited/"
      },
      {
        "name": "Ventro Ltd",
        "url": "https://assay-systems.com/register/uk/ventro/"
      },
      {
        "name": "Lindum Group Ltd",
        "url": "https://assay-systems.com/register/uk/lindum/"
      },
      {
        "name": "Novus Property Solutions Ltd",
        "url": "https://assay-systems.com/register/uk/novus-property-solutions/"
      },
      {
        "name": "Sureserve Fire & Electrical",
        "url": "https://assay-systems.com/register/uk/sureserve-fire-electrical/"
      },
      {
        "name": "Checkmate Fire Solutions Limited",
        "url": "https://assay-systems.com/register/uk/checkmate-fire-solutions-limited/"
      },
      {
        "name": "Fieldway Supplies Limited",
        "url": "https://assay-systems.com/register/uk/fieldway-supplies/"
      },
      {
        "name": "Polar NE Ltd",
        "url": "https://assay-systems.com/register/uk/polar-ne-ltd/"
      },
      {
        "name": "F. BAMFORD (ENGINEERING) LIMITED",
        "url": "https://assay-systems.com/register/uk/f-bamford-engineering-limited/"
      },
      {
        "name": "Frazer-Nash Manufacturing Ltd",
        "url": "https://assay-systems.com/register/uk/frazer-nash-manufacturing-ltd/"
      },
      {
        "name": "A Connolly Ltd",
        "url": "https://assay-systems.com/register/uk/a-connolly/"
      },
      {
        "name": "Baydale Control Systems Limited",
        "url": "https://assay-systems.com/register/uk/baydale-control-systems-limited/"
      },
      {
        "name": "GUNNING LONDON LIMITED",
        "url": "https://assay-systems.com/register/uk/gunning-london-limited/"
      },
      {
        "name": "IG Doors Limited",
        "url": "https://assay-systems.com/register/uk/ig-doors-limited/"
      },
      {
        "name": "TF Jones Property Services Ltd",
        "url": "https://assay-systems.com/register/uk/tf-jones-property-services-ltd/"
      },
      {
        "name": "Instalrite Design Ltd",
        "url": "https://assay-systems.com/register/uk/instalrite-design-ltd/"
      },
      {
        "name": "THE WINDOW COMPANY (CONTRACTS) LTD",
        "url": "https://assay-systems.com/register/uk/the-window-company-contracts-ltd/"
      },
      {
        "name": "Kingsway Group",
        "url": "https://assay-systems.com/register/uk/kingsway-group/"
      },
      {
        "name": "Holistic Fire Safety Ltd",
        "url": "https://assay-systems.com/register/uk/holistic-fire-safety-ltd/"
      },
      {
        "name": "Heron Manufacture Limited",
        "url": "https://assay-systems.com/register/uk/heron-manufacture-limited/"
      },
      {
        "name": "Advanced Building Projects East Anglia Limited",
        "url": "https://assay-systems.com/register/uk/advanced-building-projects-east-anglia-limited/"
      },
      {
        "name": "B.G. Elvins Ltd",
        "url": "https://assay-systems.com/register/uk/b-g-elvins-ltd/"
      },
      {
        "name": "Kirkman & Jourdain Ltd",
        "url": "https://assay-systems.com/register/uk/kirkman-jourdain-ltd-df6c/"
      },
      {
        "name": "Nationwide Windows & Doors Ltd",
        "url": "https://assay-systems.com/register/uk/nationwide-windows-doors-ltd/"
      },
      {
        "name": "Onyx Fire and Security",
        "url": "https://assay-systems.com/register/uk/onyx-fire-and-security/"
      },
      {
        "name": "RID Ltd T/A Royal Industrial Doors",
        "url": "https://assay-systems.com/register/uk/rid-ltd-t-a-royal-industrial-doors/"
      },
      {
        "name": "Carvers Building Supplies",
        "url": "https://assay-systems.com/register/uk/carvers-building-supplies/"
      },
      {
        "name": "CD Potter & Sons Ltd",
        "url": "https://assay-systems.com/register/uk/cd-potter-sons-ltd/"
      },
      {
        "name": "Wardray Premise Limited",
        "url": "https://assay-systems.com/register/uk/wardray-premise-limited/"
      },
      {
        "name": "CHAS BERGER LIMITED",
        "url": "https://assay-systems.com/register/uk/chas-berger-limited/"
      },
      {
        "name": "ReAssure Limited",
        "url": "https://assay-systems.com/register/uk/reassure-limited/"
      },
      {
        "name": "Quicksons (South & West) Ltd",
        "url": "https://assay-systems.com/register/uk/quicksons-south-west-ltd/"
      },
      {
        "name": "Ian Williams Limited",
        "url": "https://assay-systems.com/register/uk/ian-williams/"
      },
      {
        "name": "R.W. Joinery (Stockport) Limited",
        "url": "https://assay-systems.com/register/uk/r-w-joinery-stockport-limited/"
      },
      {
        "name": "Geoffrey Robinson Limited",
        "url": "https://assay-systems.com/register/uk/geoffrey-robinson/"
      },
      {
        "name": "KONE PLC",
        "url": "https://assay-systems.com/register/uk/kone-plc/"
      },
      {
        "name": "TRUSTEE FIRE AND SECURITY LIMITED",
        "url": "https://assay-systems.com/register/uk/trustee-fire-and-security-limited/"
      },
      {
        "name": "EVANDER GLAZING AND LOCKS LIMITED",
        "url": "https://assay-systems.com/register/uk/evander-glazing-and-locks-limited/"
      },
      {
        "name": "Nova Group Limited",
        "url": "https://assay-systems.com/register/uk/nova-group-limited/"
      },
      {
        "name": "Durable (UK) Limited",
        "url": "https://assay-systems.com/register/uk/durable-uk-limited/"
      },
      {
        "name": "Carmelcrest Limited",
        "url": "https://assay-systems.com/register/uk/carmelcrest-limited/"
      },
      {
        "name": "Thomas Kershaw Builders Limited",
        "url": "https://assay-systems.com/register/uk/thomas-kershaw-builders-limited/"
      },
      {
        "name": "Harris Glass Ltd",
        "url": "https://assay-systems.com/register/uk/harris-glass-ltd/"
      },
      {
        "name": "Custom Group Limited",
        "url": "https://assay-systems.com/register/uk/custom-group-limited/"
      },
      {
        "name": "Glasdon UK Ltd",
        "url": "https://assay-systems.com/register/uk/glasdon-uk-ltd/"
      },
      {
        "name": "PERMADOOR LIMITED",
        "url": "https://assay-systems.com/register/uk/permadoor-limited/"
      },
      {
        "name": "Huws Gray Ltd",
        "url": "https://assay-systems.com/register/uk/huws-gray/"
      },
      {
        "name": "Lloyd Worrall Ltd",
        "url": "https://assay-systems.com/register/uk/lloyd-worrall-ltd/"
      },
      {
        "name": "Anglian Building Products",
        "url": "https://assay-systems.com/register/uk/anglian-building-products/"
      },
      {
        "name": "Savills (UK) Limited",
        "url": "https://assay-systems.com/register/uk/savills/"
      },
      {
        "name": "ROWLAND DOOR SERVICES LIMITED",
        "url": "https://assay-systems.com/register/uk/rowland-door-services-limited/"
      },
      {
        "name": "PROOFSTAND LIMITED",
        "url": "https://assay-systems.com/register/uk/proofstand-limited/"
      },
      {
        "name": "Solar Windows Ltd",
        "url": "https://assay-systems.com/register/uk/solar-windows-ltd/"
      },
      {
        "name": "MGM LTD",
        "url": "https://assay-systems.com/register/uk/mgm-ltd/"
      },
      {
        "name": "AKW MEDI-CARE LIMITED",
        "url": "https://assay-systems.com/register/uk/akw-medi-care-limited/"
      },
      {
        "name": "Tew Brothers Ltd",
        "url": "https://assay-systems.com/register/uk/tew-brothers/"
      },
      {
        "name": "HAG Ltd",
        "url": "https://assay-systems.com/register/uk/hag-ltd/"
      },
      {
        "name": "MULTI INSTALLATIONS LTD",
        "url": "https://assay-systems.com/register/uk/multi-installations-ltd/"
      },
      {
        "name": "OpenView Security Solutions Limited",
        "url": "https://assay-systems.com/register/uk/openview-security-solutions/"
      },
      {
        "name": "Lami Doors UK ltd.",
        "url": "https://assay-systems.com/register/uk/lami-doors-uk-ltd/"
      },
      {
        "name": "Gerda Security Products Ltd",
        "url": "https://assay-systems.com/register/uk/gerda-security-products-ltd/"
      },
      {
        "name": "MD Building Services Ltd",
        "url": "https://assay-systems.com/register/uk/md-building-services-ltd/"
      },
      {
        "name": "Ashcroft Services Ltd",
        "url": "https://assay-systems.com/register/uk/ashcroft-services/"
      },
      {
        "name": "WINDOWMASTER CONTROL SYSTEMS LIMITED",
        "url": "https://assay-systems.com/register/uk/windowmaster-control-systems-limited/"
      },
      {
        "name": "Corrigenda Ltd trading as Churches",
        "url": "https://assay-systems.com/register/uk/corrigenda/"
      },
      {
        "name": "Cosyseal (Double Glazing) Limited",
        "url": "https://assay-systems.com/register/uk/cosyseal-double-glazing-limited/"
      },
      {
        "name": "CENTURY FIRE AND SECURITY LIMITED",
        "url": "https://assay-systems.com/register/uk/century-fire-and-security-limited/"
      },
      {
        "name": "Days Window and Door Services Limited",
        "url": "https://assay-systems.com/register/uk/days-window-and-door-services-limited/"
      },
      {
        "name": "ES Moss Ltd",
        "url": "https://assay-systems.com/register/uk/es-moss-ltd/"
      },
      {
        "name": "SWIFT INSTALLATIONS SOUTH WEST LIMITED",
        "url": "https://assay-systems.com/register/uk/swift-installations-south-west-limited/"
      },
      {
        "name": "LAWLORS LIMITED",
        "url": "https://assay-systems.com/register/uk/lawlors-limited/"
      },
      {
        "name": "Security Solutions (Northern) Ltd",
        "url": "https://assay-systems.com/register/uk/security-solutions-northern-ltd/"
      },
      {
        "name": "HOLLMARK LTD",
        "url": "https://assay-systems.com/register/uk/hollmark-ltd/"
      },
      {
        "name": "Trail Group Ltd",
        "url": "https://assay-systems.com/register/uk/trail-group-ltd/"
      },
      {
        "name": "NE & C Windows and Doors Ltd",
        "url": "https://assay-systems.com/register/uk/ne-c-windows-and-doors-ltd/"
      },
      {
        "name": "Phoenix Optical Technologies Ltd",
        "url": "https://assay-systems.com/register/uk/phoenix-optical-technologies-ltd/"
      },
      {
        "name": "SKYLINE PROPERTY SOLUTIONS LIMITED",
        "url": "https://assay-systems.com/register/uk/skyline-property-solutions-limited/"
      },
      {
        "name": "Ensigna Construction Ltd",
        "url": "https://assay-systems.com/register/uk/ensigna-construction-ltd/"
      },
      {
        "name": "RAAM Construction Limited",
        "url": "https://assay-systems.com/register/uk/raam-construction-limited/"
      },
      {
        "name": "PIONEER TRADING CO ESSEX LIMITED",
        "url": "https://assay-systems.com/register/uk/pioneer-trading-co-essex-limited/"
      },
      {
        "name": "Neo Property Solutions Limited",
        "url": "https://assay-systems.com/register/uk/neo-property-solutions/"
      },
      {
        "name": "G Baker Roofing Ltd",
        "url": "https://assay-systems.com/register/uk/g-baker-roofing-ltd/"
      },
      {
        "name": "Sw Security Limited",
        "url": "https://assay-systems.com/register/uk/sw-security-limited/"
      },
      {
        "name": "Leaves Building and Maintenance Contractors",
        "url": "https://assay-systems.com/register/uk/leaves-building-maintenance-contractors/"
      },
      {
        "name": "Security And Fire Experts Ltd",
        "url": "https://assay-systems.com/register/uk/security-and-fire-experts-ltd/"
      },
      {
        "name": "GC Windows Ltd",
        "url": "https://assay-systems.com/register/uk/gc-windows-ltd/"
      },
      {
        "name": "Hughes and Associates Property Services Ltd",
        "url": "https://assay-systems.com/register/uk/hughes-and-associates-property-services-ltd/"
      },
      {
        "name": "JTD Building Supplies Ltd",
        "url": "https://assay-systems.com/register/uk/jtd-building-supplies-ltd/"
      },
      {
        "name": "J C MAINTENANCE SERVICES LTD",
        "url": "https://assay-systems.com/register/uk/j-c-maintenance-services-ltd/"
      },
      {
        "name": "Doors Plus Ltd",
        "url": "https://assay-systems.com/register/uk/doors-plus-ltd/"
      },
      {
        "name": "Knowles Stained Glassworks Limited",
        "url": "https://assay-systems.com/register/uk/knowles-stained-glassworks-limited/"
      },
      {
        "name": "Heritage Project Contracts Limited",
        "url": "https://assay-systems.com/register/uk/heritage-project-contracts-limited/"
      },
      {
        "name": "Recom Solutions Ltd",
        "url": "https://assay-systems.com/register/uk/recom-solutions-ltd/"
      },
      {
        "name": "Infinity Fire Prevention Ltd",
        "url": "https://assay-systems.com/register/uk/infinity-fire-prevention-ltd/"
      },
      {
        "name": "G C FIRE PROTECTION LTD",
        "url": "https://assay-systems.com/register/uk/g-c-fire-protection-ltd/"
      },
      {
        "name": "Green Light Contracts Limited",
        "url": "https://assay-systems.com/register/uk/green-light-contracts/"
      },
      {
        "name": "SCILLONIAN TRADING LIMITED",
        "url": "https://assay-systems.com/register/uk/scillonian-trading-limited/"
      },
      {
        "name": "Fire Door Inspection Solutions Ltd",
        "url": "https://assay-systems.com/register/uk/fire-door-inspection-solutions-ltd/"
      },
      {
        "name": "Adaston Limited",
        "url": "https://assay-systems.com/register/uk/adaston-limited/"
      },
      {
        "name": "ASSIX LIMITED",
        "url": "https://assay-systems.com/register/uk/assix-limited/"
      },
      {
        "name": "Atlantic Fire Ltd",
        "url": "https://assay-systems.com/register/uk/atlantic-fire-ltd/"
      },
      {
        "name": "LEGIONELLASAFE SERVICES (UK) LIMITED",
        "url": "https://assay-systems.com/register/uk/legionellasafe-services-uk-limited/"
      },
      {
        "name": "National Timber Group England Ltd",
        "url": "https://assay-systems.com/register/uk/national-timber-group-england-ltd/"
      },
      {
        "name": "Midlands Building & Maintenance Ltd",
        "url": "https://assay-systems.com/register/uk/midlands-building-maintenance-ltd/"
      },
      {
        "name": "Hankinson Whittle Limited",
        "url": "https://assay-systems.com/register/uk/hankinson-whittle-limited/"
      },
      {
        "name": "Graham Holmes Astraseal Limited",
        "url": "https://assay-systems.com/register/uk/graham-holmes-astraseal-limited/"
      },
      {
        "name": "Ezra Safety Group Ltd",
        "url": "https://assay-systems.com/register/uk/ezra-safety-group-ltd/"
      },
      {
        "name": "Specialist Building Contracting Limited",
        "url": "https://assay-systems.com/register/uk/specialist-building-contracting-limited/"
      },
      {
        "name": "JC RAE DECORATING LTD",
        "url": "https://assay-systems.com/register/uk/jc-rae-decorating/"
      },
      {
        "name": "Vertex Facades Ltd",
        "url": "https://assay-systems.com/register/uk/vertex-facades-ltd/"
      },
      {
        "name": "FAAC ENTRANCE SOLUTIONS UK LIMITED",
        "url": "https://assay-systems.com/register/uk/faac-entrance-solutions-uk-limited/"
      },
      {
        "name": "Complete Construction & Design Ltd",
        "url": "https://assay-systems.com/register/uk/complete-construction-design-ltd/"
      },
      {
        "name": "London Fire Solutions Limited",
        "url": "https://assay-systems.com/register/uk/london-fire-solutions-limited/"
      },
      {
        "name": "Firntec Ltd",
        "url": "https://assay-systems.com/register/uk/firntec/"
      },
      {
        "name": "Graham Asset Management Ltd",
        "url": "https://assay-systems.com/register/uk/graham-asset-management/"
      },
      {
        "name": "Certus Security LLP",
        "url": "https://assay-systems.com/register/uk/certus-security-llp/"
      },
      {
        "name": "Absolute Building and Maintenance Ltd",
        "url": "https://assay-systems.com/register/uk/absolute-building-and-maintenance-ltd/"
      },
      {
        "name": "ABT Engineering",
        "url": "https://assay-systems.com/register/uk/abt-engineering/"
      },
      {
        "name": "ACG Building Services",
        "url": "https://assay-systems.com/register/uk/acg-building-services/"
      },
      {
        "name": "A&D Industrial Doors Limited",
        "url": "https://assay-systems.com/register/uk/a-d-industrial-doors-limited/"
      },
      {
        "name": "A & G Consultancy",
        "url": "https://assay-systems.com/register/uk/a-g-consultancy/"
      },
      {
        "name": "Anglian Building Products a Division of ASHI Group Limited",
        "url": "https://assay-systems.com/register/uk/anglian-building-products-a-division-of-ashi-group-limited/"
      },
      {
        "name": "Avdon Bristol Limited",
        "url": "https://assay-systems.com/register/uk/avdon-bristol-limited/"
      },
      {
        "name": "BidConnecter Limited",
        "url": "https://assay-systems.com/register/uk/bidconnecter-limited/"
      },
      {
        "name": "Booth Industries International Limited",
        "url": "https://assay-systems.com/register/uk/booth-industries-international-limited/"
      },
      {
        "name": "Breedon Electrical, Fire & Security Ltd",
        "url": "https://assay-systems.com/register/uk/breedon-electrical-fire-security-ltd/"
      },
      {
        "name": "Camel Glass & joinery Ltd",
        "url": "https://assay-systems.com/register/uk/camel-glass-joinery-ltd/"
      },
      {
        "name": "Carvers (Wolverhampton) Ltd",
        "url": "https://assay-systems.com/register/uk/carvers-wolverhampton-ltd/"
      },
      {
        "name": "Channel GLV Ltd",
        "url": "https://assay-systems.com/register/uk/channel-glv-ltd/"
      },
      {
        "name": "Chippendale Builders Limited",
        "url": "https://assay-systems.com/register/uk/chippendale-builders-limited/"
      },
      {
        "name": "Easy-gate ltd",
        "url": "https://assay-systems.com/register/uk/easy-gate-ltd/"
      },
      {
        "name": "Edmunds Design & Construction Ltd",
        "url": "https://assay-systems.com/register/uk/edmunds-design-construction-ltd/"
      },
      {
        "name": "ESH ltd",
        "url": "https://assay-systems.com/register/uk/esh-ltd/"
      },
      {
        "name": "F Bamford (Engineering) Ltd - Bamford Doors",
        "url": "https://assay-systems.com/register/uk/f-bamford-engineering-ltd-bamford-doors/"
      },
      {
        "name": "UK Fire & Security Doors Ltd",
        "url": "https://assay-systems.com/register/uk/uk-fire-security-doors-ltd/"
      },
      {
        "name": "Garfield Builders Ltd",
        "url": "https://assay-systems.com/register/uk/garfield-builders-ltd/"
      },
      {
        "name": "Golden Thread Fire Delay Ltd",
        "url": "https://assay-systems.com/register/uk/golden-thread-fire-delay-ltd/"
      },
      {
        "name": "Guardian Consultancy Services Ltd",
        "url": "https://assay-systems.com/register/uk/guardian-consultancy-services-ltd/"
      },
      {
        "name": "Gunfire Ltd",
        "url": "https://assay-systems.com/register/uk/gunfire-ltd/"
      },
      {
        "name": "Hampton Window Installations Limited",
        "url": "https://assay-systems.com/register/uk/hampton-window-installations-limited/"
      },
      {
        "name": "Hexa Projects Limted",
        "url": "https://assay-systems.com/register/uk/hexa-projects-limted/"
      },
      {
        "name": "Hive Architectural Ltd",
        "url": "https://assay-systems.com/register/uk/hive-architectural-ltd/"
      },
      {
        "name": "Integrate Group Ltd",
        "url": "https://assay-systems.com/register/uk/integrate-group-ltd/"
      },
      {
        "name": "JCL Glass Ltd",
        "url": "https://assay-systems.com/register/uk/jcl-glass-ltd/"
      },
      {
        "name": "Lantec Security Limited",
        "url": "https://assay-systems.com/register/uk/lantec-security-limited/"
      },
      {
        "name": "LKK Solution Services Ltd",
        "url": "https://assay-systems.com/register/uk/lkk-solution-services-ltd/"
      },
      {
        "name": "Manx Precision Optics Ltd",
        "url": "https://assay-systems.com/register/uk/manx-precision-optics-ltd/"
      },
      {
        "name": "Marke Property Services Ltd",
        "url": "https://assay-systems.com/register/uk/marke-property-services-ltd/"
      },
      {
        "name": "McDougall Bros (Metal Windows) Ltd",
        "url": "https://assay-systems.com/register/uk/mcdougall-bros-metal-windows-ltd/"
      },
      {
        "name": "Modplan Building & Refurbishment Contractors Ltd",
        "url": "https://assay-systems.com/register/uk/modplan-building-refurbishment-contractors-ltd/"
      },
      {
        "name": "NORTHERN FRAMES (DONCASTER) LTD",
        "url": "https://assay-systems.com/register/uk/northern-frames-doncaster-ltd/"
      },
      {
        "name": "Parias Construction & Interiors Limited",
        "url": "https://assay-systems.com/register/uk/parias-construction-interiors-limited/"
      },
      {
        "name": "R&B Refurbishment",
        "url": "https://assay-systems.com/register/uk/r-b-refurbishment/"
      },
      {
        "name": "Recom",
        "url": "https://assay-systems.com/register/uk/recom/"
      },
      {
        "name": "Record Doors UK Ltd",
        "url": "https://assay-systems.com/register/uk/record-doors-uk-ltd/"
      },
      {
        "name": "Russell Timber Technology",
        "url": "https://assay-systems.com/register/uk/russell-timber-technology/"
      },
      {
        "name": "Select Windows (Home Improvements) Ltd",
        "url": "https://assay-systems.com/register/uk/select-windows-home-improvements-ltd/"
      },
      {
        "name": "Sinclair Glazing and Joinery LTD",
        "url": "https://assay-systems.com/register/uk/sinclair-glazing-and-joinery-ltd/"
      },
      {
        "name": "Southern Industrial Doors Limited",
        "url": "https://assay-systems.com/register/uk/southern-industrial-doors-limited/"
      },
      {
        "name": "STARK",
        "url": "https://assay-systems.com/register/uk/stark/"
      },
      {
        "name": "Storeybuild LTD",
        "url": "https://assay-systems.com/register/uk/storeybuild-ltd/"
      },
      {
        "name": "Straightline Construction Limited",
        "url": "https://assay-systems.com/register/uk/straightline-construction-limited/"
      },
      {
        "name": "Strata Windows Limited",
        "url": "https://assay-systems.com/register/uk/strata-windows-limited/"
      },
      {
        "name": "Surefire Services",
        "url": "https://assay-systems.com/register/uk/surefire-services/"
      },
      {
        "name": "Sycamore Group Solutions",
        "url": "https://assay-systems.com/register/uk/sycamore-group-solutions/"
      },
      {
        "name": "T&G-PROMECH LIMITED",
        "url": "https://assay-systems.com/register/uk/t-g-promech-limited/"
      },
      {
        "name": "TOTAL BUILDING SERVICES (CHESTERFIELD) LIMITED",
        "url": "https://assay-systems.com/register/uk/total-building-services-chesterfield-limited/"
      },
      {
        "name": "Trotfield Limited",
        "url": "https://assay-systems.com/register/uk/trotfield-limited/"
      },
      {
        "name": "Vpro Infrastructure Solutions Ltd",
        "url": "https://assay-systems.com/register/uk/vpro-infrastructure-solutions-ltd/"
      },
      {
        "name": "All suppliers in United Kingdom, A to Z",
        "url": "https://assay-systems.com/register/uk/a-z/"
      }
    ],
    "assay_record": "ASY-UK-0V24D3D1CM",
    "cite_as": "Assay Systems, \"Windows, doors and related items: United Kingdom public contracts since 2024\", https://assay-systems.com/register/uk/line/windows-doors-and-related-items/"
  }
}