The winning slogan "Pulling the trigger won't make you any bigger" will be displayed on posters in schools and police stations across Hounslow and Richmond. Each member of the team won a £20 music voucher.

Meenu Dhiri, vice chairman of Hounslow Borough Community Police Consultative Group, which organised the competition, said: "The slogans they have produced are excellent and hopefully their messages will be picked up by other young people."