- Cabinet Office Minister
- Chair of Board of Customs
- Chair of Committees of Whole House
- Chairman of Ways and Means
- Chancellor of the Duchy of Lancaster
- Chancellor of the Exchequer
- Chief Commissioner of Works and Buildings
- Chief Secretary for Ireland
- Chief Secretary to the Cabinet
- Chief Secretary to the Lord Lieutenant of Ireland
- Chief Secretary to the Treasury
- Chief Whip
- Civil Lord of Admiralty
- Clerk of the Ordnance
- Commissioner for Auditing Public Accounts
- Commissioner of Customs
- Commissioner of the Board of Control
- Commissioner of Woods and Forests
- Commissioner of Works and Buildings
- Comptroller of the Royal Household
- Controller of Foreign Trade Department
213 offices in total