Thanks mjm. Am dosed up on diclofenac as this same thing happened during the summer. 'Spose I'm just being impatient and in desparate need of an instant cure!

I can't tilt it to the right (last time it happened it was backwards that I couldn't move it) so could be a trapped nerve there.

Will just have to accept that my dancing at York won't be up to it's usually very high standard!!!