The tour begins at the corner of Trafalgar Square, where you will be given a brief overview of what to expect, but of course, as the tour is secret, you will not be told everything.
For the next 1.5 hours, your guide will take you on a journey through alleys and lanes, trying to show you places that time has forgotten.
At the start of the tour, visit a small old police station that Londoners pass by every day without realising its historical importance. The tour then continues through the streets associated with JK Rowling's Harry Potter. Along the way, you'll be shown the discreet social club that has its roots in a more eccentric 18th century London.
The next part of the tour is very atmospheric, as you will feel like you have been transported back to the time of Charles Dickens, looking for old gas lamps, signs and door knockers, nestled next to old pubs hidden away off the main thoroughfares.
And if that wasn't enough, you'll then be treated to one of London's most extraordinary tales of superstition, a lasting ceremony for a king, and finally the group will go in search of one of the city's most mysterious pieces of art: the Duke of Wellington's nose.