The multipoint gearbox on my double-glazed door broke, rendering it inoperable. I called Fidelity Security & Locksmiths, as a Which Recommended Trader, and they were able to come the same day. The new gearbox was fitted swiftly and efficiently, and the fee charged was very reasonable. A couple of days later, I experienced a small problem with the door related to the repair and called FSL. Without the slightest hesitation, they agreed to come out that day and look at the door. They spent quite some time successfully fixing the problem without charging any more for their efforts. I could not have wished for better service.