I'm looking if anyone has a cross sectional diagram of the WW2 British Light Tank Mk VI. One that shows the crew in place would be particularly helpful.
I would recommend David Fletcher's 'British Battle Tanks, World War One to 1939', and also his 'British Light Tanks, 1927-45' - there are a number of diagrams and illustrations of the various marks of light tank.
If those prove unsatisfactory, I would suggest emailing the reference archive at Bovington Tank Museum, and the very helpful archive staff will tell you if they have one.