Avanti West Coast have confirmed they are reducing from Monday 18th. It is included in this article about national express.
So it's probably looking like we will be back to just 1tph on the London to Birmingham/Manchester/Liverpool/Glasgow routes only, like March/April of last year.
This article also says that in general for some TOCs:
"The exact scale of reduction is still being worked on, but the DfT says service levels may fall to as low as 40% of the normal timetable by some operators."
National Express to suspend all services
The firm says tighter Covid restrictions and falling passenger numbers have prompted the decision.
www.bbc.co.uk
So it's probably looking like we will be back to just 1tph on the London to Birmingham/Manchester/Liverpool/Glasgow routes only, like March/April of last year.
This article also says that in general for some TOCs:
"The exact scale of reduction is still being worked on, but the DfT says service levels may fall to as low as 40% of the normal timetable by some operators."