{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-16T13:55:00Z",
  "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-0CF4BD5188",
    "type": "line",
    "country": "uk",
    "name": "Installation of doors and windows: United Kingdom public contracts since 2024",
    "url": "https://assay-systems.com/register/uk/line/installation-of-doors-and-windows/",
    "text": [
      "Since January 2024 the line carries 76 award notices from 48 buyers. 62 suppliers share it.",
      "36 in 2024. 27 in 2025. 13 in the first 8 months of 2026.",
      "20 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": "Gerda Security Products Ltd",
        "url": "https://assay-systems.com/register/uk/gerda-security-products-ltd/"
      },
      {
        "name": "Sovereign Group Limited",
        "url": "https://assay-systems.com/register/uk/sovereign/"
      },
      {
        "name": "F. BAMFORD (ENGINEERING) LIMITED",
        "url": "https://assay-systems.com/register/uk/f-bamford-engineering-limited/"
      },
      {
        "name": "Kingfisher UPVC Windows & Doors Ltd",
        "url": "https://assay-systems.com/register/uk/kingfisher-upvc-windows-doors-ltd/"
      },
      {
        "name": "Mysons Limited",
        "url": "https://assay-systems.com/register/uk/mysons-limited/"
      },
      {
        "name": "F Bamford & Co Ltd",
        "url": "https://assay-systems.com/register/uk/f-bamford-co-ltd/"
      },
      {
        "name": "Anglian Building Products",
        "url": "https://assay-systems.com/register/uk/anglian-building-products/"
      },
      {
        "name": "HOLLMARK LTD",
        "url": "https://assay-systems.com/register/uk/hollmark-ltd/"
      },
      {
        "name": "A Hammond & Sons Ltd",
        "url": "https://assay-systems.com/register/uk/a-hammond-sons-ltd/"
      },
      {
        "name": "Etech Group Ltd",
        "url": "https://assay-systems.com/register/uk/etech-group-ltd/"
      },
      {
        "name": "Walter Lilly & Co. Limited",
        "url": "https://assay-systems.com/register/uk/walter-lilly-co-limited/"
      },
      {
        "name": "Stepnell Ltd",
        "url": "https://assay-systems.com/register/uk/stepnell/"
      },
      {
        "name": "Ian Williams Limited",
        "url": "https://assay-systems.com/register/uk/ian-williams/"
      },
      {
        "name": "HJ Haywood & Son Ltd",
        "url": "https://assay-systems.com/register/uk/hj-haywood-son-ltd/"
      },
      {
        "name": "CLC Contractors Limited",
        "url": "https://assay-systems.com/register/uk/clc-contractors/"
      },
      {
        "name": "Straightline NE Ltd",
        "url": "https://assay-systems.com/register/uk/straightline-ne-ltd/"
      },
      {
        "name": "Walter West Builders Ltd",
        "url": "https://assay-systems.com/register/uk/walter-west-builders-ltd/"
      },
      {
        "name": "Polar NE Ltd",
        "url": "https://assay-systems.com/register/uk/polar-ne-ltd/"
      },
      {
        "name": "Novus Property Solutions Ltd",
        "url": "https://assay-systems.com/register/uk/novus-property-solutions/"
      },
      {
        "name": "SCHOFIELD & SONS LIMITED",
        "url": "https://assay-systems.com/register/uk/schofield-sons/"
      },
      {
        "name": "BID Group Ltd",
        "url": "https://assay-systems.com/register/uk/bid-group-ltd/"
      },
      {
        "name": "Sureserve Fire & Electrical",
        "url": "https://assay-systems.com/register/uk/sureserve-fire-electrical/"
      },
      {
        "name": "West End Roofing & Construction Ltd",
        "url": "https://assay-systems.com/register/uk/west-end-roofing-construction-ltd/"
      },
      {
        "name": "ROSSMARK CONSTRUCTION LIMITED",
        "url": "https://assay-systems.com/register/uk/rossmark-construction-limited/"
      },
      {
        "name": "R G Carter Cambridge Limited",
        "url": "https://assay-systems.com/register/uk/r-g-carter-cambridge-limited/"
      },
      {
        "name": "Baydale Control Systems Limited",
        "url": "https://assay-systems.com/register/uk/baydale-control-systems-limited/"
      },
      {
        "name": "Cosyseal (Double Glazing) Limited",
        "url": "https://assay-systems.com/register/uk/cosyseal-double-glazing-limited/"
      },
      {
        "name": "G&S Hutchinson Ltd",
        "url": "https://assay-systems.com/register/uk/g-s-hutchinson-ltd/"
      },
      {
        "name": "SKYLINE PROPERTY SOLUTIONS LIMITED",
        "url": "https://assay-systems.com/register/uk/skyline-property-solutions-limited/"
      },
      {
        "name": "NATIONCARE WINDOWS LIMITED",
        "url": "https://assay-systems.com/register/uk/nationcare-windows-limited/"
      },
      {
        "name": "Commercial Services UK Ltd.",
        "url": "https://assay-systems.com/register/uk/commercial-services-uk-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": "J C MAINTENANCE SERVICES LTD",
        "url": "https://assay-systems.com/register/uk/j-c-maintenance-services-ltd/"
      },
      {
        "name": "Kingsway Group",
        "url": "https://assay-systems.com/register/uk/kingsway-group/"
      },
      {
        "name": "Constellia Public Ltd",
        "url": "https://assay-systems.com/register/uk/constellia-public/"
      },
      {
        "name": "Hamptons",
        "url": "https://assay-systems.com/register/uk/hamptons/"
      },
      {
        "name": "Specialist Building Contracting Limited",
        "url": "https://assay-systems.com/register/uk/specialist-building-contracting-limited/"
      },
      {
        "name": "AJS Construct Ltd",
        "url": "https://assay-systems.com/register/uk/ajs-construct-ltd/"
      },
      {
        "name": "1st choice Security systems",
        "url": "https://assay-systems.com/register/uk/1st-choice-security-systems/"
      },
      {
        "name": "airfire control ltd",
        "url": "https://assay-systems.com/register/uk/airfire-control-ltd/"
      },
      {
        "name": "Blargoans Ltd",
        "url": "https://assay-systems.com/register/uk/blargoans/"
      },
      {
        "name": "Burngreave Building Co Ltd",
        "url": "https://assay-systems.com/register/uk/burngreave-building-co-ltd/"
      },
      {
        "name": "DMG Developments Ltd",
        "url": "https://assay-systems.com/register/uk/dmg-developments-ltd/"
      },
      {
        "name": "EHL UK",
        "url": "https://assay-systems.com/register/uk/ehl-uk/"
      },
      {
        "name": "FSM Manufacturing Ltd",
        "url": "https://assay-systems.com/register/uk/fsm-manufacturing-ltd/"
      },
      {
        "name": "Graham Holmes Astraseal Limited",
        "url": "https://assay-systems.com/register/uk/graham-holmes-astraseal-limited-5ba0/"
      },
      {
        "name": "Hadrian Architectural Glazing Systems",
        "url": "https://assay-systems.com/register/uk/hadrian-architectural-glazing-systems/"
      },
      {
        "name": "HOWARD YARNOLD (WINDOWS AND DOORS) LTD",
        "url": "https://assay-systems.com/register/uk/howard-yarnold-windows-and-doors-ltd/"
      },
      {
        "name": "JPD Services Ltd",
        "url": "https://assay-systems.com/register/uk/jpd-services-ltd/"
      },
      {
        "name": "logic alarms ltd",
        "url": "https://assay-systems.com/register/uk/logic-alarms-ltd/"
      },
      {
        "name": "Marian Doors and Shutters",
        "url": "https://assay-systems.com/register/uk/marian-doors-and-shutters/"
      },
      {
        "name": "Modplan Building & Refurbishment Contractors Ltd",
        "url": "https://assay-systems.com/register/uk/modplan-building-refurbishment-contractors-ltd/"
      },
      {
        "name": "New Century Doors Limited",
        "url": "https://assay-systems.com/register/uk/new-century-doors-limited/"
      },
      {
        "name": "N&P Windows Ltd",
        "url": "https://assay-systems.com/register/uk/n-p-windows-ltd/"
      },
      {
        "name": "Pinecliffe Construction Ltd",
        "url": "https://assay-systems.com/register/uk/pinecliffe-construction-ltd/"
      },
      {
        "name": "SEVERN VALLEY METAL WINDOW AND DOOR MAINTENANCE CO LIMITED",
        "url": "https://assay-systems.com/register/uk/severn-valley-metal-window-and-door-maintenance-co-limited/"
      },
      {
        "name": "Stonehouse Contractors",
        "url": "https://assay-systems.com/register/uk/stonehouse-contractors/"
      },
      {
        "name": "Strata Windows Limited",
        "url": "https://assay-systems.com/register/uk/strata-windows-limited/"
      },
      {
        "name": "Strauss Controls LTD",
        "url": "https://assay-systems.com/register/uk/strauss-controls-ltd/"
      }
    ],
    "assay_record": "ASY-UK-0CF4BD5188",
    "cite_as": "Assay Systems, \"Installation of doors and windows: United Kingdom public contracts since 2024\", https://assay-systems.com/register/uk/line/installation-of-doors-and-windows/"
  }
}