Strange, this was just south of Manc proper

Perhaps when one shop in town adds it to the menu the rest have to follow suit?

The best amalgamation happened down south - a kebab shop diversified into a pizzas, and thus you could get kebab pizza...

Quite possibly, it's interesting how local these things can be. I'd not really even considered that places wouldn't sell battered sausages. It would be almost like going in and finding out that they didn't offer fish battered - it just seemed so standard. I guess while I've lived in a variety of cities I've only been to a fairly small number of chip shops, something I'd not considered until now.