Pls help

Hi all,

I am travelling to Scotland tomorrow, however trainline has different info about the train, compared to avanti. I am not sure who to listen to. Avanti say change at Birmingham new street, whereas the trainline say change at Wolverhampton. Obvs I'll ask at the departing station tomorrow. I'm just confusion on who to listen to, or if they might just be the same train.

Thx for any help