Blinker, so named because he blinks whenever he has a bright idea for a new invention, is the son of an eccentric Professor who is developing a top secret Pulsar Crystal X. Blinker's inventions help him to be a successful goalkeeper and to keep an eye on The Masons gang - and some real crooks.

Please Sir! is a London Weekend Television produced situation comedy, created by writers John Esmonde and Bob Larbey and featured the actors John Alderton, Deryck Guyler, Joan Sanderson, Noel Howlett, Erik Chitty and Richard Davies. The series ran for 55 episodes between 1968 and 1972.