Archives holding the principal Thatcher files
- Thatcher private papers catalogue (Churchill Archive Centre)
- Thatcher official papers catalogue (TNA)
British political parties & associated unofficial sites
- Conservative Party
- Conservative Way Forward
- conservative-party.net (party website guide)
- conservativehome (blog)
- Iain Dale & friends (blog)
- Labour Party
- Liberal Democrats
British government
- The Monarchy
- Prime Minister's Office
- Foreign & Commonwealth Office
- Treasury
- Home Office
- Ministry of Defence
- Government press releases
- UK Office for National Statistics
UK Parliament
- Houses of Parliament
- Houses of Parliament (webcast)
- Parliamentary debates (Hansard) since 1802 - search by date
- Parliamentary debates (Hansard) since 1802 - search by contributor
British think tanks
- Adam Smith Institute
- Centre for Policy Studies
- Demos
- Institute of Economic Affairs
- Institute for Fiscal Studies
- Institute for Public Policy Research
- Politeia
- Policy Exchange
- Selsdon Group
- Social Affairs Unit
- Social Market Foundation
US think tanks & links
- American Enterprise Institute
- Brookings Institution
- Cato Institute
- Freedom House
- Heritage Foundation
- Thatcher Center at the Heritage Foundation
- Hoover Institution
- Hudson Institute
- Manhattan Institute
- townhall.com
British media
Britain, Europe & the US
- Atlantic Partnership
- Bruges Group
- European Union treaties
- Václav Klaus, President of the Czech Republic
- NATO Ministerial Communiques
US Presidential Libraries
- Bush Presidential Library (41st President)
- Bush Presidential Library (43rd President)
- Carter Presidential Library
- Ford Presidential Library
- Hoover Institution collections
- Reagan Presidential Library
British historical resources: (a) official
- UK statutes since 1215
- UK statutory instruments since 1987
- Parliamentary research library (wide range of policy)
- National Audit Office
- Parliamentary debates (Hansard) since 1802
- UK Office for National Statistics
- UK National Archives ('TNA')
- Directgov (Government Information Service)
British historical resources: (b) unofficial
- Conservative Party Archive
- Churchill Archives Centre (Thatcher MSS)
- BBC Thatcher micro-site (early career, including film)
- Political Science Resources
- Ipsos MORI (opinion polling data)
- British tax & benefit system (IFS guides to)