The tour begins in the corner of Trafalgar Square, where you will be given a brief outline of what you can expect, but of course, as the tour is secret, you won't be told everything.

For the next 1.5-hours, the guide will take you on a journey through back streets and alleyways, in an endeavour to show you places which time has forgotten. Early on in the tour, visit a tiny old police station which Londoners walk past every day but never realise its historical significance. The tour then heads onto streets associated with J.K. Rowling's Harry Potter. Along the way, you will be shown the discrete social club which has its roots in a more eccentric 18th century London. The next part of the tour is very atmospheric, as you'll appear to be transported back to the time of Charles Dickens, looking out for old gas lamps, signs and door knockers, nestled beside old pubs hidden off the main thoroughfares.

And if that isn't enough, you'll then be treated to one of London's most extraordinary stories of superstition, an enduring ceremony for a king, and to finish off the group will go off searching for one of the city's most mysterious pieces of art - the Duke of Wellington's nose.