| Advanced Research and Invention Agency |
| Armed Forces Covenant Fund Trust |
| Bank of England |
| British Earth Sciences Corp (PBC) |
| Companies House |
| Corporate Officers of the House of Commons |
| Corporate Officers of the House of Lords |
| DfT Operator Limited |
| Fleet Air Arm Museum |
| Government Analysis Function (CS) |
| Government Communications Headquarters |
| Government Debt Management Function (CS) |
| Government Economic Service (CS) |
| Government Legal Department (CS) |
| Government Property Agency |
| Historic Royal Palaces |
| HM Courts & Tribunals Service |
| HM Passport Office |
| HM Prison and Probation Service |
| HM Revenue & Customs |
| London and Continental Railways Limited |
| Maritime and Coastguard Agency |
| National Archives, The |
| Policy Profession (CS) |
| Porton Biopharma Limited |
| Reclaim Fund Ltd |
| Royal Mint |
| Scientific Standards Corp (PBC), UK |
| Secret Intelligence Service |
| Security Service, The |
| Sellafield Ltd |
| Sheffield Forgemasters International Ltd |
| Transport Safety & Registry Corp (PBC), UK |
| UK Government Investments |
| UK National Investigations Corp (PBC) |
| UK Nuclear Development Corp (PBC) |
| UK Scientific Standards Corp (PBC) |
| UK Transport Safety & Registry Corp (PBC) |
| UK Visas and Immigration |
| Veterans UK |