"Tom Anderson" wrote in message
th.li...

Which should finish in 2018. Would we expect service patterns to change
immediately?

The most up to date info is in the draft London and South East RUS - which
amongst other info about the ECML and Kings Cross services gives the
Thameslink GN side as 8 tph, of which:

2 tph 12 car Peterborough
2 tph 12 car Cambridge
4 tph 8 car Welwyn GC

all from 2018

Paul S