{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-16T10:02:35Z",
  "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-0L49KB70AS",
    "type": "page",
    "country": "uk",
    "name": "Welwyn Hatfield Borough Council : suppliers in the Contracts Finder register",
    "url": "https://assay-systems.com/register/uk/buyer/welwyn-hatfield-borough-council/",
    "summary": "Who supplies Welwyn Hatfield Borough Council: the suppliers the Contracts Finder register records for it and the lines it buys.",
    "text": [
      "The suppliers the Contracts Finder register records as having sold to Welwyn Hatfield Borough Council , and the lines it buys. A name with a link opens what the register holds for that supplier; a line opens every supplier in it.",
      "For each line this buyer buys, the extract names every award notice it placed, the supplier, the value where one is disclosed, and the notices behind every figure."
    ],
    "records": [
      {
        "name": "all buyers",
        "url": "https://assay-systems.com/register/uk/buyer/"
      },
      {
        "name": "all lines",
        "url": "https://assay-systems.com/register/uk/"
      },
      {
        "name": "architectural and related services",
        "url": "https://assay-systems.com/register/uk/line/architectural-and-related-services/"
      },
      {
        "name": "building construction work",
        "url": "https://assay-systems.com/register/uk/line/building-construction-work/"
      },
      {
        "name": "building consultancy services",
        "url": "https://assay-systems.com/register/uk/line/building-consultancy-services/"
      },
      {
        "name": "car park building construction work",
        "url": "https://assay-systems.com/register/uk/line/car-park-building-construction-work/"
      },
      {
        "name": "cleaning services",
        "url": "https://assay-systems.com/register/uk/line/cleaning-services/"
      },
      {
        "name": "construction materials",
        "url": "https://assay-systems.com/register/uk/line/construction-materials/"
      },
      {
        "name": "construction materials and associated items",
        "url": "https://assay-systems.com/register/uk/line/construction-materials-and-associated-items/"
      },
      {
        "name": "construction work",
        "url": "https://assay-systems.com/register/uk/line/construction-work/"
      },
      {
        "name": "construction work for multi-dwelling buildings and individual houses",
        "url": "https://assay-systems.com/register/uk/line/construction-work-for-multi-dwelling-buildings-and-individual-houses/"
      },
      {
        "name": "engineering services",
        "url": "https://assay-systems.com/register/uk/line/engineering-services/"
      },
      {
        "name": "financial consultancy services",
        "url": "https://assay-systems.com/register/uk/line/financial-consultancy-services/"
      },
      {
        "name": "grounds maintenance services",
        "url": "https://assay-systems.com/register/uk/line/grounds-maintenance-services/"
      },
      {
        "name": "health and social work services",
        "url": "https://assay-systems.com/register/uk/line/health-and-social-work-services/"
      },
      {
        "name": "health services",
        "url": "https://assay-systems.com/register/uk/line/health-services/"
      },
      {
        "name": "industrial machinery",
        "url": "https://assay-systems.com/register/uk/line/industrial-machinery/"
      },
      {
        "name": "it services: consulting, software development, internet and support",
        "url": "https://assay-systems.com/register/uk/line/it-services-consulting-software-development-internet-and-support/"
      },
      {
        "name": "legal services",
        "url": "https://assay-systems.com/register/uk/line/legal-services/"
      },
      {
        "name": "lift-maintenance services",
        "url": "https://assay-systems.com/register/uk/line/lift-maintenance-services/"
      },
      {
        "name": "lifts",
        "url": "https://assay-systems.com/register/uk/line/lifts/"
      },
      {
        "name": "miscellaneous building structures",
        "url": "https://assay-systems.com/register/uk/line/miscellaneous-building-structures/"
      },
      {
        "name": "miscellaneous transport equipment and spare parts",
        "url": "https://assay-systems.com/register/uk/line/miscellaneous-transport-equipment-and-spare-parts/"
      },
      {
        "name": "mowers",
        "url": "https://assay-systems.com/register/uk/line/mowers/"
      },
      {
        "name": "networking, internet and intranet software package",
        "url": "https://assay-systems.com/register/uk/line/networking-internet-and-intranet-software-package/"
      },
      {
        "name": "pest-control services",
        "url": "https://assay-systems.com/register/uk/line/pest-control-services/"
      },
      {
        "name": "programming services of application software",
        "url": "https://assay-systems.com/register/uk/line/programming-services-of-application-software/"
      },
      {
        "name": "recruitment services",
        "url": "https://assay-systems.com/register/uk/line/recruitment-services/"
      },
      {
        "name": "refuse and waste related services",
        "url": "https://assay-systems.com/register/uk/line/refuse-and-waste-related-services/"
      },
      {
        "name": "repair and maintenance services",
        "url": "https://assay-systems.com/register/uk/line/repair-and-maintenance-services/"
      },
      {
        "name": "roof works and other special trade construction works",
        "url": "https://assay-systems.com/register/uk/line/roof-works-and-other-special-trade-construction-works/"
      },
      {
        "name": "software programming and consultancy services",
        "url": "https://assay-systems.com/register/uk/line/software-programming-and-consultancy-services/"
      },
      {
        "name": "supply services of personnel including temporary staff",
        "url": "https://assay-systems.com/register/uk/line/supply-services-of-personnel-including-temporary-staff/"
      },
      {
        "name": "technical services",
        "url": "https://assay-systems.com/register/uk/line/technical-services/"
      },
      {
        "name": "tree-maintenance services",
        "url": "https://assay-systems.com/register/uk/line/tree-maintenance-services/"
      },
      {
        "name": "trees",
        "url": "https://assay-systems.com/register/uk/line/trees/"
      },
      {
        "name": "urban planning and landscape architectural services",
        "url": "https://assay-systems.com/register/uk/line/urban-planning-and-landscape-architectural-services/"
      },
      {
        "name": "urban planning services",
        "url": "https://assay-systems.com/register/uk/line/urban-planning-services/"
      },
      {
        "name": "waste and rubbish containers and bins",
        "url": "https://assay-systems.com/register/uk/line/waste-and-rubbish-containers-and-bins/"
      },
      {
        "name": "works for complete or part construction and civil engineering work",
        "url": "https://assay-systems.com/register/uk/line/works-for-complete-or-part-construction-and-civil-engineering-work/"
      },
      {
        "name": "Craemer",
        "url": "https://assay-systems.com/register/uk/craemer/"
      },
      {
        "name": "Everwarm",
        "url": "https://assay-systems.com/register/uk/everwarm/"
      },
      {
        "name": "ICB General Building AND Civil Engineering",
        "url": "https://assay-systems.com/register/uk/icb-general-building-and-civil-engineering/"
      },
      {
        "name": "IPL Plastics",
        "url": "https://assay-systems.com/register/uk/ipl-plastics/"
      },
      {
        "name": "Medigold Health Consultancy",
        "url": "https://assay-systems.com/register/uk/medigold-health-consultancy/"
      },
      {
        "name": "Opinion Research Services",
        "url": "https://assay-systems.com/register/uk/opinion-research-services/"
      },
      {
        "name": "REED Specialist Recruitment",
        "url": "https://assay-systems.com/register/uk/reed-specialist-recruitment/"
      },
      {
        "name": "RJ Lifts",
        "url": "https://assay-systems.com/register/uk/rj-lifts/"
      }
    ],
    "assay_record": "ASY-UK-0L49KB70AS",
    "cite_as": "Assay Systems, \"Welwyn Hatfield Borough Council : suppliers in the Contracts Finder register\", https://assay-systems.com/register/uk/buyer/welwyn-hatfield-borough-council/"
  }
}