Bletchleyite
Veteran Member
I think what you actually mean is London - Birmingham services as really there are two services combined here - London - Northampton and Northampton - Birmingham particularly since the last re-shuffle when they serve some of the intermediate stations between Coventry and New Street rather than just International as they did in Silverlink days.
Which is where the new 3+2 sets will allegedly go. But then comes the random unit generator, and you can bet the Tring stoppers is where you will actually see the 2+2 sets and the 3+2s up north.