Didn’t see an appropriate thread to post so apologies if this is in the wrong place. Used these about 2 months ago - www.derbymedicalsdirect.co.uk with centres in Derby, Burton and Leicester. eye sight, the lot, for £39 on a saturday morning. took 15 mins! Was actually Derby County’s club doctor who did it.
The appropriate thread is here 
Yes, i know it is. Didn’t appear to be able to reply to it though. 