| Public Authority | Number of Section 50 complaints |
| Amber Valley Borough Council | 1 |
| Amersham Town Council | 1 |
| Arts Council England | 1 |
| Askern Town Council | 1 |
| Attorney General's Office | 2 |
| Audit Commission | 2 |
| Avon and Somerset Constabulary | 1 |
| BBC | 32 |
| Bedfordshire Police | 1 |
| Bedgrove Junior School | 1 |
| Bexley Council | 1 |
| Biddenden Parish Council | 1 |
| Birmingham City Council | 1 |
| Blackpool Council | 1 |
| Braintree District Council | 1 |
| Bramshott and Liphook Parish Council | 1 |
| Bridgend County Borough Council | 1 |
| Brighton & Hove City Council | 3 |
| Bristol City Council | 1 |
| British Nuclear Fuels plc | 2 |
| British Transport Police | 1 |
| Brownhills Community Technology College | 1 |
| Buckinghamshire County Council | 3 |
| Cabinet Office | 21 |
| Cambridge City Council | 2 |
| Cambridge University | 1 |
| Cambridgeshire Constabulary | 2 |
| Caradon District Council | 1 |
| Charities Commission | 1 |
| Cherwell District Council | 1 |
| Chief Constable Essex Police | 1 |
| Chief Constable Greater Manchester Police | 2 |
| Chief Constable Lancashire Constabulary | 3 |
| Chief Constable of Hampshire Constabulary | 1 |
| Chief Constable Police Service of Northern Ireland | 2 |
| Chief Constable South Yorkshire Police | 1 |
| Chief Constable Thames Valley Police | 1 |
| Chiltern District Council | 1 |
| City and County of Swansea | 1 |
| City of York Council | 1 |
| Commission for Local Administration in England | 2 |
| Commission for the Architecture and the Built Environment | 1 |
| Companies House | 1 |
| Coombe Dean School | 1 |
| Crown Prosecution Service | 3 |
| DEFRA | 12 |
| Department for Business, Enterprise and Regulatory Reform | 4 |
| Department for Children, Schools & Families | 3 |
| Department For Communities & Local Government | 4 |
| Department for Constitutional Affairs | 1 |
| Department for Culture Media and Sport | 7 |
| Department for Education and Skills | 6 |
| Department for Employment and Learning N Ireland | 1 |
| Department for Social Development | 1 |
| Department for Transport | 5 |
| Department of Culture Arts and Leisure | 1 |
| Department of Environment, Northern Ireland | 1 |
| Department of Finance and Personnel | 1 |
| Department of Health | 13 |
| Department of the Environment | 2 |
| Department of Trade and Industry | 4 |
| Devon and Cornwall Constabulary | 1 |
| Drayton Manor High School | 1 |
| DVLA | 4 |
| East Cambridgeshire District Council | 1 |
| Electoral Commission | 1 |
| Environment Agency | 4 |
| Export Credits Guarantee Department | 2 |
| Fareham Borough Council | 1 |
| Ferryhill Town Council | 2 |
| Financial Services Authority | 5 |
| Foreign & Commonwealth Office | 8 |
| Forensic Science Service | 1 |
| Government Office for the South West | 1 |
| Greenwich London Borough Council | 1 |
| Guildford Borough Council | 1 |
| Hart District Council | 1 |
| Her Majestys Court Service | 1 |
| Higher Education Funding Council England | 1 |
| Highways Agency | 1 |
| HM Revenue and Customs | 3 |
| HM Treasury | 3 |
| Home Office | 18 |
| Hounslow Borough Council | 1 |
| House of Lords Appointments Commission | 2 |
| Housing Corporation | 1 |
| Independent Police Complaints Commission | 1 |
| Islington Council | 1 |
| Kent County Council | 2 |
| Knowsley Metropolitan Borough Council | 1 |
| Lancashire Constabulary | 1 |
| Lancaster City Council | 1 |
| Learning and Skills Council | 1 |
| Leeds City Council | 1 |
| Liverpool City Council | 2 |
| London Borough of Barking and Dagenham | 1 |
| London Borough of Bromley | 2 |
| London Borough of Camden | 2 |
| London Borough of Enfield | 2 |
| London Borough Of Islington | 2 |
| London Borough of Lambeth | 1 |
| London Borough of Lewisham | 1 |
| London Borough Of Newham | 1 |
| London Borough of Newham (Information Governance) | 1 |
| London Borough of Waltham Forest | 1 |
| London Development Agency | 1 |
| Manorbier Community Council | 1 |
| Metropolitan Police Service | 10 |
| MHRA | 1 |
| Mid Sussex District Council | 1 |
| Mid Yorkshire Hospitals NHS Trust | 1 |
| Ministry of Defence | 17 |
| Ministry of Justice | 12 |
| National Audit Office | 1 |
| National Consumer Council | 1 |
| National Gallery | 1 |
| National Offender Management service | 5 |
| National Policing Improvement Agency | 2 |
| National Savings and Investments | 1 |
| Newcastle College | 2 |
| North West London Hospitals NHS Trust | 1 |
| Northern Ireland Office | 3 |
| Northern Ireland Prison Service | 1 |
| Office of Communications (OFCOM) | 5 |
| Office of Government Commerce | 1 |
| Office of the First Minister & Deputy First Minister | 2 |
| OFSTED (Office for Standards in Education) | 3 |
| Oldham Metropolitan Borough Council | 1 |
| Olympic Delivery Authority | 3 |
| Oxford Radcliffe hospitals NHS Trust | 1 |
| Oxford University Legal Services | 1 |
| Pesticide Safety Directorate | 2 |
| Plymouth City Council | 1 |
| Post Office (Royal Mail Group Plc) | 1 |
| Powys County Council | 1 |
| Public Guardianship Office | 1 |
| Ryedale District Council | 1 |
| Sandwell Metropolitan Borough Council | 1 |
| Scotland Office | 1 |
| Sefton Metropolitan Borough Council | 1 |
| Shotteswell Parish Council | 2 |
| Sir William Borlase Grammar School | 1 |
| South Somerset District Council | 1 |
| South Tyneside Council | 1 |
| St Helens Metropolitian Borough Council | 1 |
| Staffordshire County Council | 1 |
| State Veterinary Service | 1 |
| Suffolk Coastal District Council | 1 |
| Surrey Heath Borough Council | 1 |
| Surrey Police | 1 |
| Swale Borough Council | 1 |
| Tate Gallery | 1 |
| Thames Valley Police HQ | 1 |
| The British Council | 2 |
| The British Museum | 1 |
| The Charity Commission | 1 |
| The Department of Trade and Industry | 4 |
| The Food Standards Agency | 2 |
| The Gambling Commission | 1 |
| The Home Office | 1 |
| The Insolvency Service | 1 |
| The Northern Ireland Transport Holding Company | 1 |
| The Planning Service - Northern Ireland | 1 |
| The Police Ombudsman for Northern Ireland | 1 |
| The Treasury Solicitor | 1 |
| The Treasury Solicitors Department | 1 |
| Trafford Metropolitan Borough Council | 1 |
| UK Border Agency | 1 |
| University Hospitals of Leicester NHS | 1 |
| University of Nottingham | 1 |
| University of Oxford | 2 |
| University of Wales, Aberystwyth | 1 |
| University of Westminster | 1 |
| Vale of Glamorgan Council | 1 |
| Veterinary Medicines Directorate | 1 |
| Wakefield Metropolitan District Council | 5 |
| Waveney District Council | 1 |
| West Berkshire District Council | 1 |
| West Sussex County Council | 2 |
| Weymouth and Portland Borough Council | 1 |
| Winchester City Council | 2 |
| Wokingham District Council | 2 |
| Wood Green High School | 1 |
| Youth Justice Board for England & Wales | 1 |
| Total | ** 416 |