British Rail Mk1 Coaches in UK Prototype Discussions (not questions!) Posted yesterday at 14:20 · Edited yesterday at 14:32 by jonny777 On 24/02/2021 at 22:38, Ravenser said: Let's have a go at these.... The block of E suffix numbers are presumably the record of a complete ex LNER formed train: E16475E BTK ; E13440E all 3rd ; E21746E ex NER vehicle ; E11182E, all first? ; E9154E Buffet car Dia 185 , conv frm Gresley all 3rd; E13398E, E13344E, all thirds ;E16286E BTK, E16182E BTK, Some very second string 9 coach express with an extra BTK on one end, for some reason (a portion? But no 1st class accommodation. Unless the CK in the next list is part of a 2 coach portion? or the BTK is the start of the next rake?) Then: E15587 - Mk1 CK, E9248 - BSO, E24156 - SK, E24211- SK, (Can't make sense of this - a Mk1 BSO at this date might be expected at the front of an ECML express - but this group of coaches plainly isn't) E43130 Mk1 non gangway BS , E46167 non-gangway S, E46210 non-gangway S, E46214 non-gangway S , E43125 non-gangway BS (Clearly a 5 car inner suburban set) As for the first block E34482 - BSK, E4269 - TSO, E34476 - BSK, E4326 - TSO, E13635 - FK, E4293 - TSO, E13100 - FK, E15694M (ex LMS, dunno), E34731 - BSK, E4306 - TSO, E4291 - TSO, E9215 - BSO, (This looks like something with lots of portions - but they're all 2nd class???) E25693M, ( no idea what this LMS vehicle is, probably goes with the subsequent train??:) E80967 (BG - originally allocated to LMR) , E13125 - FK, E11 -RFO; E80001 - RK, E1000M - RSO?, E25021 - SK, E25040 SK, E25023 SK, (Lots of catering but seemingly only an 8 coach express?) The spotter may have only partially recorded some trains, as some of the formations don't quite make sense to me. Maybe someone who actually understands the subject can identify what we are really looking at here? The only comment I would make, is that if the person who made the notes was in possession of a platform ticket, he might have been walking down a platform with a train on either side and recording the numbers of both formations alternately? He may also have listed the catering vehicles in a separate column to the others? What I can tell you, and might be useful - but I had failed to appreciate at the time of posting - is that E15694, E15693, E1000, E25021, E25040 were in maroon livery; but the others were in crimson/cream. This is the reason for the 'M' next to E15693 and E15694. E25693 is a typo on my part. E21746E has a 'B' next to it. Whether this means that it was still in pre-nationalisation brown/teak I don't know - but it would be surprising in mid-1956. Sorry to mislead you.