Thanks Gappy, like the change to the protesters, that may work better.
Regarding your changes, that's not far off what actually exists in the other 23pgs of the script. There is a burger van which is also a kind of knocking shop, the former manager lives behind the service station in a makeshift camp after having a nervous breakdown, an obnoxious and lazy chef, and there is also the main service station manager who is the antagonist of the show. They all form a service station collective with main story arcs and subplots happening between them all.
Making the service station a new venture is a great idea, I'll have to think out how that would work. Writing for radio would be interesting, might give that a go anyway for some experience.