{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-20T00:02:37Z",
  "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-0CN57SN1QW",
    "type": "page",
    "country": "uk",
    "name": "Tessella Ltd: public contracts won without a rival in United Kingdom",
    "url": "https://assay-systems.com/register/uk/uncontested/s/tessella-ltd/",
    "figures": [
      {
        "label": "uncontested awards",
        "value": 9,
        "unit": "count"
      },
      {
        "label": "of its awards",
        "value": 28,
        "unit": "percent",
        "display": "28%"
      },
      {
        "label": "without a competition",
        "value": 9,
        "unit": "count"
      },
      {
        "label": "single bid",
        "value": 0,
        "unit": "count"
      }
    ],
    "text": [
      "Tessella Ltd won 9 of its 32 public contract awards in United Kingdom without a rival from 2015-08-10 to 2021-09-14: 9 without a competition and 0 after a competition that drew a single bid. 6 buyers awarded it without a rival, the largest UK SHARED BUSINESS SERVICES LIMITED with 3."
    ],
    "tables": [
      [
        {},
        {
          "Date": "2021-09-14",
          "Buyer": "UK Centre For Ecology & Hydrology ocds-b5fd17-87ff75d9-d868-4396-8b89-cfdbf9dc881b-1",
          "Buyer link": "https://assay-systems.com/register/uk/uncontested/b/uk-centre-for-ecology-hydrology/",
          "How": "No competition Single tender action (below threshold)",
          "Stated reason": "—"
        },
        {
          "Date": "2021-07-29",
          "Buyer": "RADIOACTIVE WASTE MANAGEMENT - NUCLEAR DECOMMISSIONING AUTHORITY 018157-2021-RWM348-02-1",
          "Buyer link": "https://assay-systems.com/register/uk/uncontested/b/radioactive-waste-management-nuclear-decommissioning-authority/",
          "How": "No competition",
          "Stated reason": "—"
        },
        {
          "Date": "2021-03-12",
          "Buyer": "RADIOACTIVE WASTE MANAGEMENT - NUCLEAR DECOMMISSIONING AUTHORITY 005111-2021-RWM348-01-1",
          "Buyer link": "https://assay-systems.com/register/uk/uncontested/b/radioactive-waste-management-nuclear-decommissioning-authority/",
          "How": "No competition",
          "Stated reason": "—"
        },
        {
          "Date": "2021-02-01",
          "Buyer": "ATAMIS LTD ocds-b5fd17-547abf10-5479-4cf0-9c31-80d8133135ad-1",
          "Buyer link": "https://assay-systems.com/register/uk/uncontested/b/atamis-ltd/",
          "How": "No competition Single tender action (below threshold)",
          "Stated reason": "—"
        },
        {
          "Date": "2020-09-25",
          "Buyer": "UK SHARED BUSINESS SERVICES LIMITED ocds-b5fd17-735213f4-5553-44f6-bf08-e3afd82dd2f4-1",
          "Buyer link": "https://assay-systems.com/register/uk/uncontested/b/uk-shared-business-services-limited/",
          "How": "No competition Single tender action (below threshold)",
          "Stated reason": "—"
        },
        {
          "Date": "2020-08-31",
          "Buyer": "UK SHARED BUSINESS SERVICES LIMITED ocds-b5fd17-11fb735d-4a13-4ddb-b9a7-f13a79039fa0-1",
          "Buyer link": "https://assay-systems.com/register/uk/uncontested/b/uk-shared-business-services-limited/",
          "How": "No competition Single tender action (below threshold)",
          "Stated reason": "—"
        }
      ]
    ],
    "records": [
      {
        "name": "all of United Kingdom",
        "url": "https://assay-systems.com/register/uk/uncontested/"
      },
      {
        "name": "UK SHARED BUSINESS SERVICES LIMITED",
        "url": "https://assay-systems.com/register/uk/uncontested/b/uk-shared-business-services-limited/"
      },
      {
        "name": "RADIOACTIVE WASTE MANAGEMENT - NUCLEAR DECOMMISSIONING AUTHORITY",
        "url": "https://assay-systems.com/register/uk/uncontested/b/radioactive-waste-management-nuclear-decommissioning-authority/"
      },
      {
        "name": "UK Centre For Ecology & Hydrology",
        "url": "https://assay-systems.com/register/uk/uncontested/b/uk-centre-for-ecology-hydrology/"
      },
      {
        "name": "RADIOACTIVE WASTE MANAGEMENT LIMITED",
        "url": "https://assay-systems.com/register/uk/uncontested/b/radioactive-waste-management-limited/"
      },
      {
        "name": "ATAMIS LTD",
        "url": "https://assay-systems.com/register/uk/uncontested/b/atamis-ltd/"
      },
      {
        "name": "UK DEBT MANAGEMENT OFFICE",
        "url": "https://assay-systems.com/register/uk/uncontested/b/uk-debt-management-office/"
      },
      {
        "name": "All countries",
        "url": "https://assay-systems.com/register/uncontested/"
      }
    ],
    "assay_record": "ASY-UK-0CN57SN1QW",
    "cite_as": "Assay Systems, \"Tessella Ltd: public contracts won without a rival in United Kingdom\", https://assay-systems.com/register/uk/uncontested/s/tessella-ltd/"
  }
}