Awning repairs, where to go?

Hi all, I live in Bedfordshire & would like my Dorema awning assessed for repair, preferably local(ish). The zip has come away from the main panel in a few locations, at least one zip has lost its end stop & a few tie down loops have come away. I can still use it but its getting harder to erect! I can't afford c.£500 for a replacement! Can't remember what size it is but the van is approx 17' long!

Any feedback would be gratefully received.