Leave Westminster tube following signs to the Houses of Parliament. Cross St Margaret Street to Westminster Abbey and the adjacent St Margaret's Church. Turn back along St Margaret Street and continue ahead as the road becomes Parliament Street, and then Whitehall. Follow it past the Cenotaph, a simple memorial to those people who died in World Wars I and II, Downing Street and Horse Guards Parade all the way to Trafalgar Square.

Turn right here and cross Northumberland Avenue. Turn right into the Strand, which links Westminster with the City of London. Turn right at Savoy Street, to see the Queen's Chapel of the Savoy; or carry on along the Strand, past Somerset House.

Turn right into Surrey Street and follow signs to visit the Roman Baths on the right, otherwise keep ahead. The two churches in the middle of the road are St Mary-le-Strand and St Clement Danes. After these the road becomes Fleet Street.

After the banks of Lloyds and Child & Co turn right into Whitefriars Street. At the crossroads turn left and left again into Dorset Rise. Turn right into St Bride's Passage, descend the steps and the Bridewell Theatre is to the right. Turn left along Bride Lane to St Bride's Church, which has an entrance on the left. Turn right and go over the crossroads.

You are now in Ludgate Hill. Turn left into the street called Old Bailey and continue to the Central Criminal Court, known as The Old Bailey – it lies on the site of the notorious former Newgate Prison. Cross Newgate Street and follow Giltspur Street to reach St Bartholomew's Hospital.

Look out for the only remaining statue of Henry VIII above the arch and continue under this to visit St Bartholomew-the-Less, the parish church of the hospital where Stuart architect Inigo Jones was baptised. Otherwise continue past the central square opposite Smithfield Market, and notice the marks on the stone wall left by a Zeppelin raid during World War I. St Bartholomew-the-Great is through the arch ahead. From here, turn left on West Smithfield, right on Long Lane and left into Lindsey Street, then turn left again into Charterhouse Street.

Cross the road and opposite the entrance to Smithfield turn right along St John Street. Bear left along St John's Lane and a few paces on is St John's Gate. Keep going and turn left at Clerkenwell Road and bear left along Britton Street, turning right at St John's Park into Benjamin Street and left at the end to reach Farringdon tube where the walk ends.