This 1953 vintage London Transport poster features a colourful well-known image of a royal guard with his rifle gun, standing outside a sentry box. The London Underground roundel logo also features towards the bottom right of the piece. The artwork is by John Bainbridge (1920-1978), who designed posters for London Underground from 1953 to 1957.
Travel posters such as the one featured here were created to attract attention and engage with members of the public people & provide advertisements of destinations & new ways passengers could travel.