Hi All, I would like to recommend 'Intrasights' in Somerset.
My Lisenfeld scope was playing up and shooting around 5" high at 100 yards. I re-zeroed it and all was well for a few shots, then 5" high again. I contacted the man via Email and explained the problem and he suspected a lubrication problem, stated the initial cost and turn around time. Scope returned, lubricated and tested in a three week turnaround and at the cost stated.
I have no connection with this company, but thought this was excellent service.