Hi Matt,
The plans I have a copy of came from the Admiralty via a friend who helps organise MAFVA (Miniature Armoured Fighting Vehicles Assoc).  They are side and plan views.  I looked high and low for interior photos and could only come up with one overhead shot showing the layout of the control cabin (wheelhouse?).  There are a large number of photos available on the web, especially the Australian War Memorial and the US NARA sites.  These invariably are ‘in action’ shots from the Pacific and I haven’t seen many of them before (and I deal in second hand military books). Highly recommended!
Send me your address via email and I will photcopy the plans for you
Andy 
