From Headley Heath cross Headley Common Road and follow the woodland footpath along Tye Lane and Buckland Lane, circling around Pfizer UK through Dawcombe Nature Reserve. Cross the bridge over the M25 towards Walton Heath. Great views south over the North Downs. Across Walton Heath then cross Dorking Road (second time), and follow the path to Mere Pond in Walton-On-The-Hill. After a break at Mere Pond (coffee shop available), walk through the village, following the path through the fields and woodland. Head back, under the M25, and finally back up to Headley Heath, back to the car park.