I wanted to find out why my iphone 5 wouldn't charge anymore so I find this lovely man who stood in a red telephone box in Greenwich and he had a quick look at it and diagnosed that the battery was over inflated and needed changing. He changed the battery for £39, checked if my phone started again and held the charge and of I was with a phone working again! He sent me an invoice with 1 year warranty. He is a a very knowledgeable man regarding phones and I would not hesitate to ask him to repair my phone again if it develops a fault. Thanks for a professional service!