It is one of the most common mistakes made by tourists visiting the capital - referring to beautiful Tower Bridge as London Bridge. But a father-of-one has found the mislabelling of the iconic landmark so frustrating, he has launched a one-man campaign to correct tourists from around the world. Charles Lawley, from London, trawls Instagram looking for users who have who have made the mistake as he gets a kick out of correcting them. His typical reply is 'That's Tower Bridge not London Bridge.'