For all you Trident aficionados passing near to heathrow - BA has an excellent museum 2 mins walk from hatton cross tube station.
It is staffed by volunteers and you need to make an appointment but it is well worth the visit. Allow yourself a couple of hours and take a packet of biscuits along to complement the free mugs of tea (the staff really appreciate good ones).
There are all of the aircraft manuals, some of the old uniforms which bring back far too distant memories - the B-Cal kilts, the BOAC pinafore dresses of the early 70s and not forgetting the last BEA one with a wrap around skirt!!!!!
And for the gruesome lots of the old flight safety reports and I mean lots!!!!!
Spent 3 days researching their archives.