By Laura Forsyth London’s most scenic half marathon returned for its biggest-ever race on Sunday, drawing in thousands of participants from all walks of life. Over 18,500 runners took over the city in the seventh edition of the London Landmarks Half Marathon race. The capital’s iconic event is the only central London half marathon that takes in both the City of London and Westminster and all the capital’s landmarks. This year, runners and wheelchair users passed impressive sights across the city from The Cheesegrater to The Scapel. First over the start line in Pall Mall were the wheelchair par…