On your marks... get set... GO PLAY!

Sherlock’s got a new client but he needs your assistance. Help him navigate through the streets of London as he makes his way from 221b to the Olympic stadium where he will begin his investigation of the man with the twisted leg.

The Taxi Jam competition is now closed. Many congratulations to our 10 winners who each receive a London 2012 Great British Classic Limited Edition black taxi. We'd like to thank our friends at Hornby for kindly donating the prizes.