This walk follows a section of the North Downs Way (NDW) south east of London, along the edge of the North Downs Escapement. The walk is very rural despite starting and finishing in "Zone 6". It has fine views to the south, and some pretty woods. However, the early part of the walk suffers from some noise from the M25. There are several ways to cut the walk short, returning by bus (covered by Oyster).
The walk starts in Caterham (a commuter town on the edge of Zone 6) and heads south along a ridge to join the North Downs Way (NDW). The main part of this walk then follows the NDW along the edge of the North Downs escarpment, through pretty woods carpeted with wild garlic and bluebells and clearings with nice views to the south. There is a slight diversion from the NDW through the Titsey Plantation. The morning of the walk is quite strenuous as the path meanders up and down the side of the North Downs escarpement.
After passing Titsey, the M25 is left behind, and the walk is quiet. Lunch is at a pub on the summit of Botley Hill (268m), a Marilyn and the highest point on the North Downs. Note the true summit is by a water tower/radio mast, about 1 km west of the trig point.
The afternoon section continues along the NDW, through more open land and field, with views to the south
Finally, leaving the NDW, it heads north to the village of Knockholt Pound (and its nice pubs) and on towards Knockholt Station.
The start and end of the walk are inside Zone 6 - so you can use a 1 day Travelcard. There are also places where you can cut the walk short by using regular buses on which you take Oyster / 1 day Travelcards, making this walk suitable for both summer and winter. On Sunday, buses are less frequent, but the lunchtime pub (a music venue) often has free live music, and it's only a few km further to Westerham Hill Road's bus stop.