(23 Feb 2015, 7:37 pm)Dan wrote I'm not sure.
As none of the 2xx series "East Durham" services operate on a Sunday, they haven't got services feeding into the X7 at Peterlee, so I'm not sure if it would be as successful as it is during Monday - Saturday daytimes...
I don't think it would do well either even just with places on the route as the 21 can seem to look deserted at the Peterlee end of the route on Sundays and I think if it wasn't for the Aycliffe - Darlington passengers it probably wouldn't be commercially viable which the X7 doesn't really have these sorts of passenger intake, especially on Sundays.