Thameslink:
Three Bridges
Brighton
Horsham
Cambridge
Peterborough
Bedford
Luton
Hornsey (?)
Some TL drivers sign via Lewes only Horsham Peterborough and Three Bridges TL sign to Horsham
Most of the TL drivers above would sign to Blackfriars or London Bridge via Streatham or Crystal Palace. At Tulse Hill these routes merge. London Bridge then diverges via Peckham and Blackfriars via Herne Hill
As Brighton and Three Bridges USED to sign the Sutton loop Sutton to Norwood Junction/Selhurst via West Croydon was a diversion probably still is for St Albans depot and Cricklewood
Not quite correct.
For Thameslink, drivers that sign Blackfriars to Three Bridges (via Streatham or via London Bridge and Sydenham or via London Bridge and Peckham Rye) are:
Bedford
Brighton
Cambridge (limited)
Horsham
Luton (also sign via Crystal Palace, see below)
Peterborough (limited)
Three Bridges
Those that sign Three Bridges to Brighton:
Bedford
Brighton (only drivers to sign Brighton Down Sidings and Preston Park Sidings)
Cambridge
Three Bridges
Luton
Those that sign Three Bridges to Horsham:
Horsham
Peterborough
Three Bridges
Brighton used to sign via Clapham Junction but since the reopening of London Bridge in 2018 this has no longer been required and so route knowledge has lapsed.
Some of Brighton depot unofficially sign via Lewes, there’s around half a dozen drivers I believe that sign it and insist on maintaining it.
No ‘mainline’ depot sign via Crystal Palace as this is not a mainline route - the two mainline options are Streatham or London Bridge, with a third variation after Tulse Hill to go right via Peckham Rye. Luton do sign via Crystal Palace but they are not a mainline depot. The only booked services via Crystal Palace are indeed the Sutton to Cricklewood Depot ECS moves.