I *think* it's an old Ben Dover, but I only have the one scene. The name she uses in this scene is Roxy, but none of the identifiable Roxys seem to match.
The basic setup is that our hero finds her attending horses in a field. He persuades her to disrobe and then she performs oral. It's filmed outside mostly on a bridge (a pooh-sticks playing type bridge, if you will) until it rains and they move undercover of the trees.
Couple of pictures of her (as I say, it's a very old VHS):
[img]http://img156.imageshack.us/img156/2333/img2436ij4.gif[/img]
[img]http://img256.imageshack.us/img256/6595/img2438xr5.gif[/img]
I'm very keen to explore her other work
Cheers,
Graham