Mysterious orange signs, labelled NEWT, which sprung up on lamp posts overnight have been explained by a BBC film crew.

Cameramen have descended upon Epping Forest to film an episode of New Tricks, the popular BBC programme which sees a team of ex police officers solving old crimes.

Director Tom Mullens, says that actor Dennis Waterman will be filmed visiting the forest later today, as his character attempts to solve a mystery.

He said: “We are filming in the centre of the forest where there is a nice little pond.

“The writer of the episode set it in Epping Forest.

“The story is of a guy who likes running and he runs through the forest.”

The car park of Miller and Carter Steak House on the Wake Arms Roundabout has been filled with trailers and dozens of crew members, although the director says that it is just for today.