Ah yes - the old days when every town had a depot seemingly. Across the border, United Auto maintained a large number of depots in Northumberland. Berwick had its depot as did Alnwick with maintenance facilities, albeit limited. As regards Alnwick.....
Nearby Wooler had a depot building with an enquiry office (!) for 8 vehicles but can't recall if it performed any maintenance. It seemed to act as a sub depot as Alnwick provided spare vehicles. It was subsequently vacated in Northumbria days; the 4 remaining vehicles parked up in the bus station as an outstation of Alnwick. Meanwhile, Alnwick always maintained an open air outstation at Seahouses in the public car park that lasted into Arriva times for 1 vehicle (I think).
United also had some substantial facilities elsewhere. Rothbury had a large depot building and enquiry office
https://www.flickr.com/photos/25854...p-YvCzdm-YvCy8q-J9bNnn-26qx4gK-XuPkf5-27Ng8NP
but it didn't have a fixed allocation, just rotating 3/4 vehicles through Morpeth. It closed c.1989/90 (I think) replaced by open parking in the auction mart. Despite the size of it, it was classed as an outstation.
Meanwhile, the similar sort of facility at Pickering had just 5 vehicles but no maintenance or spare vehicles. However, it had a fixed allocation (latterly 5 Leyland Leopards) but with no spares, Scarborough provided a vehicle fairly regularly.
https://www.flickr.com/photos/77751...ist-UihRkt-fvEENA-cXZwq1-dNfDVn-cXqFMj-cXqE5m