LONDON, ENGLAND - MARCH 13: New recruits to the Metropolitan Police Service take part in their 'Passing Out Parade' at Hendon Training Centre on March 13, 2015 in London, England. 216 recruits took part in the parade which symbolises the completion of their training in the company of the Mayor of London Boris Johnson and the Metropolitan Police Commissioner Sir Bernard Hogan-Howe. (Photo by Rob Stothard/Getty Images)