Professor Horatio Pendulum has a problem. His time-travelling invention, the Chronosphere, has overloaded and scattered fragments of London's history across the City. Roman soldiers march past Lloyd's of London, a Huguenot refugee sings hymns on Threadneedle Street, and a Victorian nursemaid can't find her way home.

Become a Time Hunter and help Dan and Bex solve twelve riddles, from the Monument to Seething Lane Gardens, meeting the ghosts of the Great Fire of 1666, Leadenhall Market's old gander, the Mercers' Maiden and Samuel Pepys along the way.

This free family audio walk from Fun Kids pairs with a printable Time Hunter map and handbook for a real 2 to 2.5 hour adventure around the City of London. Download yours at funkidslive.com and start hunting.