(12 Dec 2022, 9:48 pm)nova347 wrote What was the old 21A/21B?
Followed the route of the current 21 to Chester.
The 21a went to Houghton via Great Lumley and Fencehouses (extended on a DCC contract for a period to Peterlee on a Sunday).
The 21b went up to Waldridge Park Estate. Replaced by the 34/34a and 25.