I have been looking at Towcester signal box signaling layout on LMS signal box diagrams and a list of leaver numbers and what they controlled, on the SMJ web site.
There are a few items which do not add up.
IE point and point locks 21, 27,
Signals 44, 45, 46
44 down entry to platform (located exit end of platform)
45 down starter to Stratford (right hand line, left hand signal)
46 down starter to Banbury (left hand line , right hand signal)
Point 36 shows a point lock but has no leaver,down entry to platform 2 and 3.
Mike