I've had a look on B26.com and found it useful, thanks for the second link to the book though as I've not seen that before.
The B26 groups were based in Essex (the county where I live) as it was closer to the continent, they didn't have the range of the heavy bombers which were based further away. I've cycled around most of the bases and they are in peaceful countryside now, at Matching Green the road now is what used to be part of the main runway and I always think of those airmen and what they went through when riding along there.