You must go to the RAF Museum Hendon before you go back. They've got some really good exhibits there which include:-
B17G, P51D, Typhoon, Beaufighter, Beaufort, Blenheim, Mosquito, Spitfires, Hurricanes, B25, Wellington, Lancaster, Battle, Defiant, parts of a Halifax, He111, Ju88, Ju87, Me110, Me109s, He162, Fw190, Short Sunderland (you can walk all the way thru), Lysander, V1, V2, Gladiator, CR42 Falco, Seagull, Anson, Hudson, Tempest II, plus many WW1 and post war/cold war jets such as F86, Meteor F8, EE Lightning, Tornado, Phantom, Buccaneer etc.
There's also RAF Museum Cosford as well. Aircraft include:-
Me262 (moving to Hendon late 2003), Me410, Ki100, Ki46, B24, Catalina, Mosquito, Storch, Meteors, Spitfire, Hurricane, Ju52, P47, Yokosuka MXY7 Ohka plus many British experimental jets and also loads of missiles/rockets from WW2 onwards (a lot of German missiles/rockets especially).
Check the websites out at:
http://www.rafmuseum.org.uk/