(10 Sep 2014, 9:04 pm)NEBCD Malarkey wrote M2A also follows the M3 Route from Concord to Heworth also, and I am sure it follows a slightly different Route into Birtley compared to the M2.
The M2A has to go left at the bottom of Fell Bank and then down Harras Bank to allow it to be facing the right direction to go back up through Portmeads etc