Instituciones nacionales:

• British Monarchy
• Parliament
• House of Commons
• House of Lords
• Office of the Prime Minister
• Ministry of Agriculture, Fisheries and Food (MAFF)
• Veterinary Medicines Directorate (VMD)
• Pesticides Safety Directorate (PSD)
• National Institute of Agricultural Botany (NIAB)
• Intervention Board (IB)
• Central Science Laboratory (CSL)
• Centre for Environment, Fisheries and Aquaculture Science (CEFAS)
• Cabinet Office
• Service First Unit
• Social Exclusion Unit
• Better Regulation Unit
• Central Information Technology Unit (CITU)
• Central Office of Information (COI)
• Her Majesty's Stationery Office (HMSO)
• Central Computer and Telecommunications Agency (CCTA)
• The Buying Agency (TBA)
• Property Advisers to the Civil Estate (PACE)
• Committee on Standards in Public Life
• Department for Culture, Media and Sport (DCMS)
• British Tourist Authority (BTA)
• English Heritage
• Archaeology Division
• Royal Parks
• British Film Institute (BFI)
• Independent Television Commission (ITC)
• British Broadcasting Corporation (BBC)
• BBC Radio
• BBC Television
• BBC World Service
• BBC News
• Channel 4
• Channel 4 Wales / Sianel Pedwar Cymru (S4C)
• British Film Commission (BFC)
• Royal Commission on the Historical Monuments of England (RCHME)
• Royal Commission on Historical Manuscripts
• Millennium Commission
• Arts Council of England
• Crafts Council
• English Sports Council (ESC)
• National Lottery Charities Board (NLCB)
• Ministry of Defence (MoD)
• British Army
• Royal Navy
• Royal Air Force (RAF)
• Royal Auxiliary Air Force
• Directorate of Standardization (DStan)
• Meteorological Office (Met.Office) - UK National Weather Service
• UK Hydrographic Office (UKHO)
• Defence Evaluation and Research Agency (DERA)
• Centre for Marine Technology
• Defence Analytical Services Agency (DASA)
• Defence Clothing & Textiles Agency (DCTA)
• Defence Secondary Care Agency (DSCA)
• Department for Education and Employment (DfEE)
• Employment Service (ES)
• Overseas Labour Service (OLS)
• Qualifications and Curriculum Authority (QCA)
• Teacher Training Agency (TTA)
• British Educational Communications and Technology Agency (BECTA)
• Department of the Environment, Transport and the Regions (DETR)
• Air Accidents Investigation Branch (AAIB)
• Marine Accidents Investigation Branch (MAIB)
• Mobility Unit
• Maritime and Coastguard Agency (MCA)
• Driver and Vehicle Licensing Agency (DVLA)
• Environment Agency
• Highways Agency
• Vehicle Certification Agency (VCA)
• Health and Safety Executive (HSE)
• Drinking Water Inspectorate
• Planning Inspectorate
• Vehicle Inspectorate (VI)
• British Antarctic Survey (BAS)
• Ordnance Survey
• English Nature
• Audit Commission
• Countryside Commission
• Local Government Commission for England (LGCE)
• Commission for the New Towns (CNT)
• Rural Development Commission (RDC)
• Joint Nature Conservation Committee (JNCC)
• Foreign and Commonwealth Office (FCO)
• Government Communications Headquarters (GCHQ)
• Communications-Electronics Security Group (CESG)
• Department of Health (DH)
• National Health Service (NHS) Executive
• Medicines Control Agency (MCA)
• Medical Devices Agency (MDA)
• Health Education Authority (HEA)
• Human Fertilisation and Embryology Authority (HFEA)
• National Institute for Biological Standards and Control (NIBSC)
• English National Board for Nursing, Midwifery and Health Visiting (ENB)
• Human Genetics Advisory Commission (HGAC)
• Home Office (HO)
• Emergency Planning Division
• Immigration and Nationality Directorate (IND)
• Research Development and Statistics Directorate (RDS)
• United Kingdom Passport Agency
• Forensic Science Service (FSS)
• Her Majesty's Prison Service
• Office of the Data Protection Registrar
• National Criminal Intelligence Service (NCIS)
• Security Service (MI5)
• Metropolitan Police
• Dyfed-Powys Police
• Essex Police
• Humberside Police
• Greater Manchester Police
• Merseyside Police
• North Wales Police
• South Yorkshire Police
• Surrey Police
• Sussex Police
• West Midlands Police
• West Yorkshire Police
• Police Information Technology Organisation (PITO)
• Charity Commission
• Commission for Racial Equality (CRE)
• Department for International Development (DfID)
• Lord Chancellors's Department (LCD)
• Court Service
• Legal Aid Board
• Public Record Office (PRO)
• Public Trust Office
• Land Registry
• Official Solicitor to the Supreme Court
• Department of Social Security (DSS)
• Analytical Services Division (ASD)
• Benefits Agency (BA)
• Child Support Agency (CSA)
• Contributions Agency (CA)
• War Pensions Agency (WPA)
• Information Technology Services Agency (ITSA)
• Central Adjudication Services (CAS)
• Department of Trade and Industry (DTI)
• Overseas Trade Services (OTS)
• British Overseas Trade Board (BOTB)
• Oil, Gas and Petrochemicals Supplies Office (OSO)
• Export Market Information Centre (EMIC)
• Export Control Organisation (ECO)
• Export Credits Guarantee Department (ECGD)
• Invest in Britain Bureau (IBB)
• Insolvency Service
• United Kingdom Atomic Energy Agency (UKAEA)
• United Kingdom Patent Office
• Radiocommunications Agency (RA)
• Office of Science and Technology (OST)
• Companies House (CH)
• National Physical Laboratory (NPL)
• National Weights and Measures Laboratory (NWML)
• British National Space Centre (BNSC)
• Low Pay Commission (LPC)
• Monopolies and Mergers Commission (MMC)
• Information Society Initiative (ISI)
• Her Majesty's Treasury (HMT)
• Inland Revenue
• HM Customs and Excise
• Office for National Statistics (ONS)
• National Savings
• Financial Services Authority (FSA)
• Securities and Futures Authority (SFA)
• Her Majesty's Government Communications Centre (HMGCC)
• Valuation Office Agency (VOA)
• Crown Prosecution Service (CPS)
• Treasury Solicitor
• Serious Fraud Office (SFO)
• Office of the Commissioner for Public Appointments (OCPA)
• National Radiological Protection Board (NRPB)
• Communicable Disease Surveillance Centre (CDSC)
• Forestry Commission
• Law Commission
• Equal Opportunities Commission (EOC)
• Office of Fair Trading (OFT)
• Office for Standards in Education (OFSTED)
• Office of Telecommunications (OFTEL)
• Office of Electricity Regulation (OFFER)
• Office of Water Services (OFWAT)
• Office of Gas Supply (OFGAS)
• Office of the Rail Regulator (ORR)
• Office of Passenger Rail Franchising (OPRAF)
• Occupational Pensions Regulatory Authority (OPRA)
• Bank of England
• National Disability Council (NDC)
• National Audit Office (NAO)

Instituciones regionales:

Escocia [Scotland]
Gales [Wales]
Inglaterra [England]
Ulster [Northern Ireland]

Partidos políticos:

• British Labour Party
• Conservative Party
• Liberal Democrats
• Scottish National Party (SNP)
• Sinn Féin

Otras instituciones:

• British Council
• Local Government Association
• British Standards Institution (BSI)