"Sex & Service" is a late 1980s film, directed by Simon B. Jones. It was the second film on the Eroticon series (1st was Bockingen).
A gallery with caps is here
This includes screen credits, though these appear to be made up.
I think I noticed in the cast: Karin [9], Sarah Simms, XNK0744, Willy Montana. Possibly Susanne Romanski.