Some of the links I was given seem to have stopped working, these are shown in red; please let know of any corrections needed using the link in the banner.
The de Havilland Aircraft Heritage Centre and Mosquito Museum http://www.dehavillandmuseum.co.uk
Try http://www.harrier.org.uk for a really thorough coverage of the Harrier both historically and technically. Contributions are invited by the organiser, Michael Pryce, a frequent visitor to the Brooklands archive. The content is extensive and accurate.
And to http://www.cammfollowers.org/for coverage of Hawker aircraft from the Hart to the Harrier (with profiles from the Hurricane to the P1081 and more to come) and of pilots of Hawker aircraft.
International V/STOL Historical Society is devoted to preserving and documenting V/STOL history. A newsletter, the 'V/stol Historian' is published on www.vstol.org.
Typhoon Entente Cordiale Trust at http://www.tect.org.uk/ develops and maintains links between Hawker Typhoon veterans and the Eurofighter Typhoon squadrons of today.