That's solved that one!
So it lasted in that form for 20 odd years. Quite a long time if you think of the other services and their changes.

Very surprised there was a bus between via Harlow Green prior to the 638 though, mainly cos there wouldn't have been anything there.
The road from Beacon Lough bank towards the top of Harlow Green alongside Lyndhurst School (51/52 route) was a dead end until the newer houses were built and there obviously wasnt anything west of Wrekenton until you hit Team Valley, prior to Gateshead Council building the estate at Harlow Green and at Allerdene.

Where did the 166 go to/from?

Edit. Yeah Lambton was finished first and then Ayton a few years later.
Harlow Green school was opened in 1970