Cheers Karl! There is no way I would be spending 400 quid on a used wing that will still require paint. You're right though, Cotswold have a group buy at the moment on cutters - £315 each. This was going to be my last resort if I couldn't get a decent set of used wings.
Both wings have minor bubbles but no bodyshop I have gone to will stand over the job as the rust would probably come back.