(23 Feb 2015, 7:40 pm)ds47uk wrote The main problem is not Sunderland to Peterlee (or Sunderland to Seaham), but Seaham to Peterlee. If one of the 22 or 23 could be rerouted via Seaham this would double the Seaham to Peterlee link (without going twice round East Durham to get there which the only option to the X7 does!)
You probably could send the Arriva 22 round Seaham although it would probably have to miss out Dalton Park and then cut New Seaham's Arriva services down to two buses an hour on the 23.
I've seen a few people using the X7 between Peterlee and Seaham and also Seaham to Sunderland so it the 22 would possibly do better if it went via Seaham instead of Dalton Park as it doesn't pick up / drop off that many passengers at Dalton Park when I've used it.