Re: Mark III's, they look like Mark IIDs or later
BR Coaches are easy
Underframes with trusses - Mark 1
Rounded ends roughly 64ft long - Mark 2 family
HST trailer or 75ft long with enclosed underfloor stuff - Mark 3
Mark 2
Older style slam door Mark 2 & 2A
Mark 2 has Mark 1 style corridor doors, 2A folding doors like rest of Mark 2s
2B 2C slightly longer and wider doors, no centre doors, a bog at each end. Early 2C look like 2B, later 2C have smaller toilet windows, same body as 2DEF but with vent windows.
2DEF, the aircons, more difficult this.
Generally the TSOs are easy 2D toilets same side, E & F diagonal, D & E 2 aircon fans, F 1 aircon fan.
2F has different toilet hatches, door windows went smaller partway through 2E.
Mark3 usual home is between a couple of power cars, but there were many loco hauled 3A for WCML, slightly different grey band location, buffers, and roof vents are different to HST stock.
The mark 2 stock was interesting, 2 and 2A differences were mainly on brakes and gangway doors. 2 built vac brake, 2A built air brake.
2B was the new no centre door option, 2C was a slight facelift with later ones being ready to convert to air conditioning (hence different toilets). They were supposed to be 2D.
2DEF were a continuous build with 4 or so design changes. A few outliers like 2D FOs with single aircon fan equipment.
2D to 2E was to go from 62 seat to 64 seat, change of interior, half way through door windows were made smaller.
2E to 2F, mainly change of aircon kit, but also change of seats.
Biting the hand that feeds IT
