{
  "company_number": "05909611",
  "name": "Tetra Tech UK Holdings Limited",
  "url": "/company/05909611",
  "status": "Active",
  "is_active": true,
  "company_type": "Private Limited Company",
  "incorporated_on": "2006-08-17",
  "dissolved_on": null,
  "sic_codes": [
    {
      "code": "70100",
      "description": "Activities of head offices",
      "section": "M",
      "section_name": "Professional, scientific and technical activities",
      "url": "/sic/70100"
    }
  ],
  "registered_address": {
    "id": 2627405,
    "url": "/address/2627405",
    "line1": "101 PARK DRIVE",
    "line2": "MILTON PARK",
    "post_town": "ABINGDON",
    "county": "OXFORDSHIRE",
    "country": "UNITED KINGDOM",
    "postcode": "OX14 4RY"
  },
  "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611",
  "previous_names": [
    {
      "name": "Coffey UK Limited",
      "ceased_on": "2019-05-08"
    }
  ],
  "care_of": "",
  "po_box": "",
  "country_of_origin": "United Kingdom",
  "accounts": {
    "next_due": "2027-06-30",
    "last_made_up": "2025-09-28",
    "category": "FULL",
    "filings": [
      {
        "url": "/company/05909611/accounts/2025-09-28",
        "pdf_url": "/company/05909611/accounts/2025-09-28.pdf",
        "made_up_date": "2025-09-28",
        "period_start": "2024-09-29",
        "period_end": "2025-09-28",
        "entity_name": "Tetra Tech UK Holdings Limited",
        "dormant": false,
        "average_employees": "0.00",
        "tangible_fixed_assets": "613593000.00",
        "debtors": "7491000.00",
        "cash_bank_in_hand": "8526000.00",
        "current_assets": "16017000.00",
        "creditors_due_within_one_year": null,
        "creditors_due_after_one_year": null,
        "net_current_assets_liabilities": "-36903000.00",
        "total_assets_less_current_liabilities": "576690000.00",
        "net_assets_liabilities": "573479000.00",
        "called_up_share_capital": null,
        "profit_loss_account_reserve": null,
        "shareholder_funds": "21271000.00",
        "turnover": null,
        "other_operating_income": null,
        "cost_sales": null,
        "gross_profit_loss": null,
        "administrative_expenses": "-78000.00",
        "raw_materials_consumables": null,
        "staff_costs": null,
        "depreciation_written_off": null,
        "other_operating_charges": null,
        "operating_profit_loss": "78000.00",
        "profit_before_tax": "505000.00",
        "tax_on_profit": "548000.00",
        "profit_loss_for_period": "-43000.00",
        "file_type": "html",
        "parse_error": "",
        "source_zip": "Accounts_Monthly_Data-March2026.zip"
      },
      {
        "url": "/company/05909611/accounts/2024-09-30",
        "pdf_url": "/company/05909611/accounts/2024-09-30.pdf",
        "made_up_date": "2024-09-30",
        "period_start": "2023-10-01",
        "period_end": "2024-09-30",
        "entity_name": "Tetra Tech UK Holdings Limited",
        "dormant": false,
        "average_employees": "0.00",
        "tangible_fixed_assets": "786325000.00",
        "debtors": "49410000.00",
        "cash_bank_in_hand": "8637000.00",
        "current_assets": "58047000.00",
        "creditors_due_within_one_year": null,
        "creditors_due_after_one_year": null,
        "net_current_assets_liabilities": "30128000.00",
        "total_assets_less_current_liabilities": "816453000.00",
        "net_assets_liabilities": "816453000.00",
        "called_up_share_capital": null,
        "profit_loss_account_reserve": null,
        "shareholder_funds": "21271000.00",
        "turnover": null,
        "other_operating_income": null,
        "cost_sales": null,
        "gross_profit_loss": null,
        "administrative_expenses": "27000.00",
        "raw_materials_consumables": null,
        "staff_costs": null,
        "depreciation_written_off": null,
        "other_operating_charges": null,
        "operating_profit_loss": "322000.00",
        "profit_before_tax": "82285000.00",
        "tax_on_profit": "1222000.00",
        "profit_loss_for_period": "81063000.00",
        "file_type": "html",
        "parse_error": "",
        "source_zip": "Accounts_Monthly_Data-June2025.zip"
      },
      {
        "url": "/company/05909611/accounts/2023-09-30",
        "pdf_url": "/company/05909611/accounts/2023-09-30.pdf",
        "made_up_date": "2023-09-30",
        "period_start": "2022-10-01",
        "period_end": "2023-09-30",
        "entity_name": "Tetra Tech UK Holdings Limited",
        "dormant": false,
        "average_employees": "0.00",
        "tangible_fixed_assets": "786733000.00",
        "debtors": "90784000.00",
        "cash_bank_in_hand": "13741000.00",
        "current_assets": "104525000.00",
        "creditors_due_within_one_year": null,
        "creditors_due_after_one_year": null,
        "net_current_assets_liabilities": "52737000.00",
        "total_assets_less_current_liabilities": "839470000.00",
        "net_assets_liabilities": "839470000.00",
        "called_up_share_capital": null,
        "profit_loss_account_reserve": null,
        "shareholder_funds": "21271000.00",
        "turnover": null,
        "other_operating_income": null,
        "cost_sales": null,
        "gross_profit_loss": null,
        "administrative_expenses": "1000.00",
        "raw_materials_consumables": null,
        "staff_costs": null,
        "depreciation_written_off": null,
        "other_operating_charges": null,
        "operating_profit_loss": "-1000.00",
        "profit_before_tax": "11650000.00",
        "tax_on_profit": "2109000.00",
        "profit_loss_for_period": "9541000.00",
        "file_type": "html",
        "parse_error": "",
        "source_zip": "Accounts_Monthly_Data-July2024.zip"
      },
      {
        "url": "/company/05909611/accounts/2022-09-30",
        "pdf_url": "/company/05909611/accounts/2022-09-30.pdf",
        "made_up_date": "2022-09-30",
        "period_start": "2021-10-01",
        "period_end": "2022-09-30",
        "entity_name": "Tetra Tech UK Holdings Limited",
        "dormant": false,
        "average_employees": "0.00",
        "tangible_fixed_assets": "218935000.00",
        "debtors": "33466000.00",
        "cash_bank_in_hand": "3230000.00",
        "current_assets": "36696000.00",
        "creditors_due_within_one_year": null,
        "creditors_due_after_one_year": null,
        "net_current_assets_liabilities": "-60619000.00",
        "total_assets_less_current_liabilities": "158316000.00",
        "net_assets_liabilities": "141946000.00",
        "called_up_share_capital": null,
        "profit_loss_account_reserve": null,
        "shareholder_funds": "21264000.00",
        "turnover": null,
        "other_operating_income": null,
        "cost_sales": null,
        "gross_profit_loss": null,
        "administrative_expenses": "4717000.00",
        "raw_materials_consumables": null,
        "staff_costs": null,
        "depreciation_written_off": null,
        "other_operating_charges": null,
        "operating_profit_loss": "-8979000.00",
        "profit_before_tax": "5478000.00",
        "tax_on_profit": "1723000.00",
        "profit_loss_for_period": "3755000.00",
        "file_type": "html",
        "parse_error": "",
        "source_zip": "Accounts_Monthly_Data-June2023.zip"
      },
      {
        "url": "/company/05909611/accounts/2021-09-30",
        "pdf_url": "/company/05909611/accounts/2021-09-30.pdf",
        "made_up_date": "2021-09-30",
        "period_start": "2020-10-01",
        "period_end": "2021-09-30",
        "entity_name": "Tetra Tech UK Holdings Limited",
        "dormant": false,
        "average_employees": "0.00",
        "tangible_fixed_assets": "213198000.00",
        "debtors": "6549000.00",
        "cash_bank_in_hand": "9000.00",
        "current_assets": "38061000.00",
        "creditors_due_within_one_year": null,
        "creditors_due_after_one_year": null,
        "net_current_assets_liabilities": "-60298000.00",
        "total_assets_less_current_liabilities": "152900000.00",
        "net_assets_liabilities": "127663000.00",
        "called_up_share_capital": null,
        "profit_loss_account_reserve": null,
        "shareholder_funds": "21264000.00",
        "turnover": null,
        "other_operating_income": null,
        "cost_sales": null,
        "gross_profit_loss": null,
        "administrative_expenses": "3064000.00",
        "raw_materials_consumables": null,
        "staff_costs": null,
        "depreciation_written_off": null,
        "other_operating_charges": null,
        "operating_profit_loss": "-3064000.00",
        "profit_before_tax": "-34000.00",
        "tax_on_profit": "-169000.00",
        "profit_loss_for_period": "135000.00",
        "file_type": "html",
        "parse_error": "",
        "source_zip": "Accounts_Monthly_Data-June2022.zip"
      },
      {
        "url": "/company/05909611/accounts/2020-09-30",
        "pdf_url": "/company/05909611/accounts/2020-09-30.pdf",
        "made_up_date": "2020-09-30",
        "period_start": "2019-10-01",
        "period_end": "2020-09-30",
        "entity_name": "Tetra Tech UK Holdings Limited",
        "dormant": false,
        "average_employees": "0.00",
        "tangible_fixed_assets": null,
        "debtors": "6261000.00",
        "cash_bank_in_hand": "157000.00",
        "current_assets": "30099000.00",
        "creditors_due_within_one_year": null,
        "creditors_due_after_one_year": null,
        "net_current_assets_liabilities": "28190000.00",
        "total_assets_less_current_liabilities": "79830000.00",
        "net_assets_liabilities": "58830000.00",
        "called_up_share_capital": null,
        "profit_loss_account_reserve": null,
        "shareholder_funds": "21263000.00",
        "turnover": null,
        "other_operating_income": null,
        "cost_sales": null,
        "gross_profit_loss": null,
        "administrative_expenses": null,
        "raw_materials_consumables": null,
        "staff_costs": null,
        "depreciation_written_off": null,
        "other_operating_charges": null,
        "operating_profit_loss": null,
        "profit_before_tax": "433000.00",
        "tax_on_profit": "1000.00",
        "profit_loss_for_period": "432000.00",
        "file_type": "html",
        "parse_error": "",
        "source_zip": "Accounts_Monthly_Data-June2021.zip"
      },
      {
        "url": "/company/05909611/accounts/2019-09-30",
        "pdf_url": "/company/05909611/accounts/2019-09-30.pdf",
        "made_up_date": "2019-09-30",
        "period_start": "2018-10-01",
        "period_end": "2019-09-30",
        "entity_name": "Tetra Tech UK Holdings Limited",
        "dormant": false,
        "average_employees": null,
        "tangible_fixed_assets": null,
        "debtors": "5993000.00",
        "cash_bank_in_hand": "962000.00",
        "current_assets": "27668000.00",
        "creditors_due_within_one_year": null,
        "creditors_due_after_one_year": null,
        "net_current_assets_liabilities": "25275000.00",
        "total_assets_less_current_liabilities": "79398000.00",
        "net_assets_liabilities": "58398000.00",
        "called_up_share_capital": null,
        "profit_loss_account_reserve": null,
        "shareholder_funds": "21263000.00",
        "turnover": null,
        "other_operating_income": null,
        "cost_sales": null,
        "gross_profit_loss": null,
        "administrative_expenses": null,
        "raw_materials_consumables": null,
        "staff_costs": null,
        "depreciation_written_off": null,
        "other_operating_charges": null,
        "operating_profit_loss": null,
        "profit_before_tax": "169000.00",
        "tax_on_profit": "27000.00",
        "profit_loss_for_period": "142000.00",
        "file_type": "html",
        "parse_error": "",
        "source_zip": "Accounts_Monthly_Data-June2020.zip"
      }
    ],
    "pdf_only_filings": [
      {
        "made_up_date": "2018-09-30",
        "filing_date": "2019-02-20",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2018-09-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MzIyNzE4ODk3MWFkaXF6a2N4/document?format=pdf&download=0"
      },
      {
        "made_up_date": "2017-09-30",
        "filing_date": "2018-03-14",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2017-09-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MzIwMDAxOTE4M2FkaXF6a2N4/document?format=pdf&download=0"
      },
      {
        "made_up_date": "2016-09-30",
        "filing_date": "2017-05-16",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2016-09-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MzE3NTc4NDI1NGFkaXF6a2N4/document?format=pdf&download=0"
      },
      {
        "made_up_date": "2015-06-30",
        "filing_date": "2016-04-11",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2015-06-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MzE0NTY1MjgxOWFkaXF6a2N4/document?format=pdf&download=0"
      },
      {
        "made_up_date": "2014-06-30",
        "filing_date": "2015-02-25",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2014-06-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MzExNzQzNTE3OGFkaXF6a2N4/document?format=pdf&download=0"
      },
      {
        "made_up_date": "2013-06-30",
        "filing_date": "2014-04-17",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2013-06-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MzA5ODI1MDcyNmFkaXF6a2N4/document?format=pdf&download=0"
      },
      {
        "made_up_date": "2012-06-30",
        "filing_date": "2013-04-08",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2012-06-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MzA3NTg0ODc2M2FkaXF6a2N4/document?format=pdf&download=0"
      },
      {
        "made_up_date": "2011-06-30",
        "filing_date": "2012-04-03",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2011-06-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MzA1NTI1ODkzMWFkaXF6a2N4/document?format=pdf&download=0"
      },
      {
        "made_up_date": "2010-06-30",
        "filing_date": "2011-04-05",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2010-06-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MzAzNTA0NTA0NmFkaXF6a2N4/document?format=pdf&download=0"
      },
      {
        "made_up_date": "2009-06-30",
        "filing_date": "2010-06-07",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2009-06-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MzAxNzA1NTMxM2FkaXF6a2N4/document?format=pdf&download=0"
      },
      {
        "made_up_date": "2008-06-30",
        "filing_date": "2009-04-03",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2008-06-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MjAyOTg0NjQ1N2FkaXF6a2N4/document?format=pdf&download=0"
      },
      {
        "made_up_date": "2007-06-30",
        "filing_date": "2007-12-05",
        "form_type": "AA",
        "description": "accounts-with-accounts-type-full",
        "paper_filed": true,
        "pdf_url": "/company/05909611/accounts/2007-06-30.pdf",
        "companies_house_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history/MTg5MTAyMTc3YWRpcXprY3g/document?format=pdf&download=0"
      }
    ],
    "filing_history_url": "https://find-and-update.company-information.service.gov.uk/company/05909611/filing-history"
  },
  "confirmation_statement": {
    "next_due": "2027-08-31",
    "last_made_up": "2026-08-17"
  },
  "officers": [
    {
      "name": "GREEN, Christopher James",
      "person_url": "/person/6305935",
      "role": "director",
      "appointed_on": "2024-12-11",
      "resigned_on": null,
      "nationality": "British",
      "occupation": "",
      "source": "stream",
      "retrieved_at": "2026-08-17T10:48:07+00:00"
    },
    {
      "name": "LEMMON, Richard Alan",
      "person_url": "/person/7027855",
      "role": "director",
      "appointed_on": "2017-03-20",
      "resigned_on": null,
      "nationality": "American",
      "occupation": "",
      "source": "stream",
      "retrieved_at": "2026-08-17T10:48:07+00:00"
    }
  ],
  "psc": [
    {
      "name": "Tetra Tech, Inc.",
      "kind": "corporate-entity-person-with-significant-control",
      "person_url": null,
      "controlling_company_url": null,
      "natures_of_control": [
        "ownership-of-shares-75-to-100-percent",
        "voting-rights-75-to-100-percent",
        "right-to-appoint-and-remove-directors"
      ],
      "notified_on": "2017-04-06",
      "ceased_on": null,
      "nationality": "",
      "country_of_residence": "",
      "source": "snapshot"
    }
  ],
  "external_links": [],
  "provenance": {
    "source": "snapshot",
    "first_seen_at": "2026-07-05T12:35:35.811816+00:00",
    "last_seen_snapshot": "2026-10-01",
    "retrieved_at": "2026-10-04T03:22:49.227727+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: Companies House."
}