Often discussed here, but now something concrete in the London & SE RUS
final version - some north/south origin/destination pairings of Thameslink
services.

Source is table 5.2 in the RUS, which gives more info about routes and
stopping patterns, each pairing is 2 tph; except Brighton - Bedford which is
4tph:

18 tph through London Bridge

Brighton - Bedford 12-car (4 tph)
Three Bridges - Peterborough 12-car
Horsham - Cambridge 12-car
East Grinstead - Bedford 12-car Peak only
Caterham - St Albans 8-car
Tattenham Corner - Welwyn Garden City 8-car
Tunbridge Wells - Bedford 12-car Peak only
Ashford International -Luton 12-car Peak only

6tph via Elephant and Castle

Maidstone East via Catford - Welwyn Garden City 8-car
Sevenoaks via Catford - Luton 8-car
Bellingham via Catford - St Albans 8-car

Hope this of some interest

Paul S