Firstly - DO NOT USE THIS COMPANY! If only I had been able to read the reviews first, but in a desperate situation after my self-locking door closed behind me with keys and phone inside, a neighbor called them on my behalf after they were the first company to come up on Google. Quoted a very reasonable price on the phone, no mention of all the 'extra' labour fees, cost of materials was excessive. What was quoted to be around £80 on the phone ended up being £715!! What are you able to do when you're stuck in a vulnerable position and someone has just drilled through your lock? Difficult to argue, especially as a woman alone. There are plenty of good locksmiths in London, but this company is not one of them.