{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-18T02:52:58Z",
  "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-NG-0VEO5JP0HP",
    "type": "page",
    "country": "ng",
    "name": "LEADING DIAGONAL ENGINEERING LTD: public contracts won without a rival in Nigeria",
    "url": "https://assay-systems.com/register/ng/uncontested/s/leading-diagonal-engineering-ltd/",
    "figures": [
      {
        "label": "uncontested awards",
        "value": 4,
        "unit": "count"
      },
      {
        "label": "of its awards",
        "value": 100,
        "unit": "percent",
        "display": "100%"
      },
      {
        "label": "without a competition",
        "value": 0,
        "unit": "count"
      },
      {
        "label": "single bid",
        "value": 4,
        "unit": "count"
      }
    ],
    "text": [
      "LEADING DIAGONAL ENGINEERING LTD won 4 of its 4 public contract awards in Nigeria without a rival from 2019-04-15 to 2024-03-20: 0 without a competition and 4 after a competition that drew a single bid. 3 buyers awarded it without a rival, the largest FEDERAL CHARACTER COMMISSION with 2."
    ],
    "tables": [
      [
        {},
        {
          "Date": "2024-03-20",
          "Buyer": "NATIONAL AUTOMOTIVE DESIGN & DEVELOPMENT COUNCIL (NADDC) HQTRS ocds-gyl66f-222004001-000071",
          "Buyer link": "https://assay-systems.com/register/ng/uncontested/b/national-automotive-design-development-council-naddc-hqtrs/",
          "How": "Single bid open",
          "Stated reason": "Selective Tendering"
        },
        {
          "Date": "2019-12-20",
          "Buyer": "FEDERAL CHARACTER COMMISSION ocds-gyl66f-149001001-000017",
          "Buyer link": "https://assay-systems.com/register/ng/uncontested/b/federal-character-commission/",
          "How": "Single bid open",
          "Stated reason": "National Competitive Bidding"
        },
        {
          "Date": "2019-04-26",
          "Buyer": "FEDERAL CHARACTER COMMISSION ocds-gyl66f-149001001-000010",
          "Buyer link": "https://assay-systems.com/register/ng/uncontested/b/federal-character-commission/",
          "How": "Single bid open",
          "Stated reason": "National Competitive Bidding"
        },
        {
          "Date": "2019-04-15",
          "Buyer": "FEDERAL MINISTRY OF ENVIRONMENT HEADQUARTERS ocds-gyl66f-535001001-000193",
          "Buyer link": "https://assay-systems.com/register/ng/uncontested/b/federal-ministry-of-environment-headquarters/",
          "How": "Single bid open",
          "Stated reason": "National Competitive Bidding"
        }
      ]
    ],
    "records": [
      {
        "name": "all of Nigeria",
        "url": "https://assay-systems.com/register/ng/uncontested/"
      },
      {
        "name": "record in the register",
        "url": "https://assay-systems.com/register/ng/leading-diagonal-engineering-ltd/"
      },
      {
        "name": "FEDERAL CHARACTER COMMISSION",
        "url": "https://assay-systems.com/register/ng/uncontested/b/federal-character-commission/"
      },
      {
        "name": "FEDERAL MINISTRY OF ENVIRONMENT HEADQUARTERS",
        "url": "https://assay-systems.com/register/ng/uncontested/b/federal-ministry-of-environment-headquarters/"
      },
      {
        "name": "NATIONAL AUTOMOTIVE DESIGN & DEVELOPMENT COUNCIL (NADDC) HQTRS",
        "url": "https://assay-systems.com/register/ng/uncontested/b/national-automotive-design-development-council-naddc-hqtrs/"
      },
      {
        "name": "All countries",
        "url": "https://assay-systems.com/register/uncontested/"
      }
    ],
    "assay_record": "ASY-NG-0VEO5JP0HP",
    "cite_as": "Assay Systems, \"LEADING DIAGONAL ENGINEERING LTD: public contracts won without a rival in Nigeria\", https://assay-systems.com/register/ng/uncontested/s/leading-diagonal-engineering-ltd/"
  }
}