I would highly recommend Stephen Fretwell of SF Locksmiths. Stephen called today to replace the multi point locking system in our UPVC door, which had stuck in the closed position. Stephen opened the door without causing any damage, not even a mark on the door! He then replaced the complete locking mechanism in the door. Stephen is very knowledgable and clearly takes a lot of pride in his work. He arrived exactly when he said he would, and the price was very good. Great guy, great company, great workmanship, I would definately use this company again, I have already recommended him to family and friends!