[AndreasB]

On Kew and Duxford/IWM:

My understanding is that any file originating with the British forces is held in Kew. Captured enemy documents are held by the IWM and can be read in Duxford (on appointment), or in London (on appointment, they would be shipped from Duxford). The files in Duxford are the same (as far as I can tell) as the ones held in NARA (they are photostat copies of the NARA files, mostly in poor condition, with the exception of some originals. I do not believe they hold a lot of GAF stuff. You are allowed to use a camera at Duxford, but will likely struggle to do this in the IWM Reading Room in London.

Nick, the tip on the AHB files is supremely helpful - I was wondering where these were held.

I hope this helps.

All the best

Andreas