Received the rating in the post from the CAA today - 2 weeks almost to the day since I posted the application, £70 cheque and my logbook to them, which is pretty good service really - wouldn't complain. Thought you might like to know!
Hopefully, if the weather is not too bad, I might gingerly use it (under foggles in VMC with my mate as safety pilot) to try an instrument approach at airfields I've not approached by instruments before, Exeter and/or Plymouth, this Saturday!
Andy