Grammar Man wields his white marker pen to correct misspelt scrawls and criticise the writers.

Signing off with the words “Pow! Grammar Man Strikes Again!” he draws himself in a mask and cape, with an exclamation mark on his front.

He corrected “Phoebe woz ere innit brav” to “Phoebe was here isn’t it brother”, scribbled on the floor of a bandstand in a park in Chatham, Kent.

He added: “Terrible spelling and poor use of grammar. This is murder of the English Language!” – slightly spoiling the effect by using an unnecessary capital L. The crusader’s corrections have also appeared around nearby Rochester and Gillingham.

See: The Sun