There were two types of combined facility. There were town centre sites with the depot being co-located with the bus station, such as St Albans, Chelmsford, Bristol, Darlington etc. Of course, having a depot on lucrative prime development land meant these have largely gone - Stagecoach notably sold Southampton, effectively paying for the Hampshire Bus purchase. There were others, and a few still survive.
The other type is where Hornsea comes in. The depot is at a peripheral location in a town; effectively just calling the yard in front of the depot a bus station. Of course, there may traditionally have been some facilities e.g. an office, shelter, toilets etc. As well as Hornsea, other similar “bus stations” are Pocklington and Malton. Seemed to be common in Yorkshire with Stokesley, Pickering, Northallerton and Grassington (among others) that had the title of bus stations.
This was Stokesley bus station
https://flic.kr/p/achA5g - no toilets or shelter (and you can see prospective passengers getting wet through) but it had a travel office!
Think the Northampton one had fuelling and a wash but maintenance was done at Bedford Road and latterly at Rothersthorpe.
