A few pictures, quality less than perfect, but hopefully they'll be of use.
M11045, Crewe, 1985
M11028, Milton Keynes, 21 July 1983
RUB M10026, Milton Keynes, 21 July 1983
M12079, Milton Keynes, 21 July 1983
BG (NEA) M91539, Milton Keynes, 21 July 1983
Mk 2f FO M3353, Euston, early 80's
Mk 2f FO M3370, Crewe, 1985
Mk 2f FO, M3376, Milton Keynes, 21 July 1983,
BG (NHA) M92026, (on the rear of a Banbury-Tenby excursion, all Mk 2e/f FO's, blue/grey, one with "Inter-City Scotrail" branding), Banbury, 11 May 1985
BG (NHA) M92026
FO M11045
Mk 2f FO M3376
I also have pictures of Mk 1 RKB M1567 marshalled between a Mk 2 FO and a Mk 3 TSO (Milton Keynes, September 1982), Mk 1 RBR M1653 marshalled between a Mk 3 FO and a Mk 3 TSO (Milton Keynes, September 1982), and Mk3 TSO M12101 (Milton Keynes September 1982), unfortunately not scanned.
Finally, for the record, the interior of BG (NHA) 92026:
Ian
Since posting this earlier I've come across this thread: http://www.rmweb.co.uk/community/index.php?/topic/39042-br-mk33a3b-coaches/ which included this link: http://80srail.zenfolio.com/p520092474