I was told recently that GD no longer have a Schweizer.
As far as I'm aware, they do/did PPL training only.
Again as far as I'm aware, there isn't currently a Schweizer available for training in Wales.
Given your location, a good starting-point would be to speak to Ray Jones who lives in Abergavenny but instructs/examines out of Gloucester. I don't know if he does CPL training but, if he doesn't, he'll know the nearest place for you.
If you'd like his contact numbers, PM me.