By Order of the National Highways Agency, THIS WALL IS A DESIGNATED GRAFFITI AREA

Graffiti Area, also known as Guard Dog, is a mockery of the police and the authorities, depicting a policeman and his poodle on patrol in a designated graffiti area.

It has been painted in the courtyard of the Cargo nightclub in London, together with another celebrated Banksy wall entitled His Master’s Voice.

Credits: https://banksyexplained.com/valentines-day-mascara-14-february-2023/