In the words of Chris Rea, Driving home for Christmas.....
Northallerton to Swansea on Sun 21st Dec (poss monday 22nd), return trip TBC but not before 2nd or after 4th Jan.
Usual route via A19, A1, M18, M1, M42, M5, M50, A465 heads of the valley. Not sure if that's all right but autopilot...