Surely that's Jo Bache to the right being covered in oil by Sammy-Jane, Gill Sampson and one that I can't see, obscured by a bucket. Helen is to the left with her back to the camera displaying her lovely arse, and almost masking Karen.
This is such a great scene, a true classic because of the story line, the bunch of girls frolicking, the clothes turning wet and messy and of course the nylon getting shiny. Did not know about that glistening effect before I saw these scenes
I have an old copy of this. What a pity the Artscene/Aquantics cannot be found digitally i.e downloaded in a higher resolution.