Street artist has managed to keep his identity a closely-guarded secret since his emergence in the mid-1990s

The Metropolitan Police said it has launched a probe into the graffiti sprayed on to the Royal Courts of Justice after receiving a report of 'criminal damage' and that enquiries…

Street artist has managed to keep his identity a closely-guarded secret since his emergence in the mid-1990s

The artwork was swiftly covered up and guarded by security guards