A quick word of recommendation and endorsement after a very positive consumer experience...
...I bought a scope from David Ryan at Minsterely Ranges last month. The scope arrived less than 24 hours after purchase over the phone (itself superb service).
However, I could not get it to group on either a .270 or a .22, and phoned up to ask for a refund. In the past with various other retailers, I've had enormous trouble returning things. However, David and his staff could not have been more sympathetic and helpful, and refunded the money over the phone with no problems at all.
I sincerely wish others could be as friendly, efficient and straightfoward as this! I would certainly buy from them again.