I don't recall Robert, and I've just been looking through my files (on the computer) but I think these issues may date back to before I was getting papers electronically (and I'm NOT offering to trawl thru old filing cabinets of smelly, yellowing council papers!).
But I do have a survey from 1996 which includes a comment that there was a development opportunity on the old bus station site.
However, and if it helps, I do work ocassionally with officers of Berwick District Council (now part of Northumberland C.C.) and others in Berwick, so if no one else can help on here, give me a reminder and and I'll ask when I'm next speaking with them.