(07 Nov 2019, 5:14 pm)streetdeckfan wrote
On an evening the X21 runs as a 21 to Durham, so to me it wouldn't be much of a hassle to just change over at Durham and have 2 Streetlites going between Bishop and Durham. I'd also ditch the X21 and renumber it on an evening to the 21B since it's not express either
You'd then have the issue of remote reliefs at Durham on evenings though - there'd be a greater cost associated with this.