Situated in the Inner Temple, Temple Church is the epicentre of Templar/Priory activities in the UK. This is where Langdon and Neveu begin their search in London for the Holy Grail.

En route, drive down London's Fleet Street, also featured in the book and the ex-home of London's newspaper industry. Pass by King's College, where Langdon and Neveu, with the help of a resident researcher, searched for the meaning to the clue 'in London lies a knight a pope interred'.

This takes us on to Westminster Abbey and to the grave tomb of Sir Isaac Newton where Langdon and Neveu finally find out the identity of "the Teacher".

Your guide will drive you via St James's Park, one of London's royal parks, bordered by 3 Royal Palaces. It is here that "the Teacher" disposes of one of his unwanted accomplices. Also visit London's National Gallery which houses the Da Vinci's Virgin of the Rocks, referred to in the novel.

If you are interested in finding out more about the fascinating history of the Knights and Priories you could extend your tour to a 7 hour day.

Include The Priory Church of St Bartholomew the Great, London's last surviving 12th century church, St Bart's Hospital, Smithfield Market, St John's Gate, and the Priory of the Knights Hospitallers with its Tudor Gate House, 16th century Church and 12th century Crypt.

In the Middle Ages, warrior monks set out from here to fight for the faith and tend the sick in their hospital in Jerusalem.

Inside the Gate, see fine collections of silver, ceramics, furniture and paintings from the Knights' time in Malta. In more recent times, St John Ambulance was founded here.

During your day you will also pass many of London's famous landmarks such as Big Ben, the Houses of Parliament, the Tower of London and St Paul's Cathedral.