(14 Mar 2019, 1:09 pm)Jimmi wrote Yet York Pullman have also registered services M6 & M7 for 2019... Just a hunch that one may have the Saturday service and the other has the Sunday service, Pullman registrations are from May 4th so possibly Pullman on Saturdays and First on Sundays?
Exactly that - Pullman is Saturday, First is Sunday.
First require something smaller than a B7RLE, so suggestion is a Streetlite or E200 will transfer to York.