We had a terrible experience with this outfit, who replaced our front door lock as: 1. They have charged us £213.60 for a lock costing £48 at the supplier's webpage or amazon. Note that this charge was just for the lock as they also charged us £58.80 for installation; 2. The locksmith misled us by claiming that the lock card was available and he just needed extra time to find it due to some mix-up between the multiple lock cards in his possession. After the installation, however, he told us that the lock never had a card. 3. Their office manager refused to listen, apologise or provide refund. Stay away from these guys. There are plenty of decent and professional locksmiths in London who treat their customers with respect.