Bit of weird one but it interested me so thought I'd share. From what I can find there are 10 mainline platform 0's in the UK and all but one are currently in the game: Bradford Forster Square (Airedale & Wharfedale Lines) Cardiff Central (Cardiff City Network) Doncaster (ECML) Edinburgh Haymarket (Scotrail Express & Fife Circle Line) Gravesend (Southeastern Highspeed & Medway Valley Line) Leeds (Airedale & Wharfedale Lines & Northern Trans-Pennine) Rainham (Southeastern Highspeed & Medway Valley Line) Redhill (Brighton Main Line) Stockport (Manchester Airport Commuter) The only one missing is London King's Cross which it was announced is being developed by ATS so the full set is coming soon I guess. Maybe this was the plan all along. /s
Off the top of my head I can tick off Rainham (Cl. 700), Gravesend (Dartford-bound services), Redhill (various) and I'd imagine that Leeds and Bradford FS will have plenty. Doncaster and Haymarket don't have any, to my knowledge. In real life Haymarket's Platform 0 is used for depot access and I don't think Haymarket depot has any services. It certainly will never be used in Edinburgh - Glasgow.