UK weekend break by train

I too would have recommended Super Break. Used them several times and was never disappointed.
Friendly and efficient staff.
Sorry to see them in trouble!

Liverpool is fantastic. We've been a couple of times as I am a Beatle nut. We didn't see one stag or hen night and apart from all the Beatles stuff, it's a wonderful city (in my opinion).

I’d like to visit Liverpool too but am concerned it will be full
of hen/stag parties

There's a company called Hotel Direct who operate South somewhere but do train/hotel holidays/breaks.

Maybe your train company do deals I know East Midland trains do.
We usually book ourselves though and do it separately booking the hotel with Booking.com.

Normally I would have said SuperBreak but obviously not now. Just make sure you use a credit card to pay.