Try giving Halton GSA a bell as they currently operate one. Dont have their number though, sorry.
No they don’t, the RAFGSA have sold all of their Chippys and use Turbo Falkes now for Aerotow and their PA-25 Pawnee G-SATN. The Lycoming Chippy at Halton now belongs to a private syndicate of members of the Service flying club and gliding club.
Not a lot different to the other Chippies except for the towing gear (that was fitted to some Gypsy Chippies as well) and the Lycoming installation by Dick Stratton. Here are some under cowling shots of the installation
Different instruments
I hope that helps?