Mole Valley (UK Parliament constituency) Horsley, Effingham, Lovelace, Send, and Tillingbourne. The constituency is larger than the Mole Valley district in Surrey as it includes five wards in the east of the Borough of Guildford, three of which are nearer to Woking than to Dorking. The largest town in the constituency is Dorking, second largest is Leatherhead and there are many rural and semi-rural villages, generally within one hour's reach of London so properly classed as part of the London Commuter Belt. The constituency was created in 1983; much of the same area was covered by the Dorking constituency which preceded it. It is a
Sutton and Mole Valley lines the landowner, Thomas Grissell, meant that vertical ventillation shafts could not be constructed and the tunnel portals were given lavish architectural treatment. Betchworth Tunnel is south of Dorking. It is long with a maximum gradient of 1 in 80 (1.25 per cent). It runs through the upper greensand of the Deepdene Ridge to the east of the town. Construction difficulties delayed the opening south of Dorking. It collapsed on 27 July 1887, remaining closed for over six months. Sutton and Mole Valley lines The Sutton and Mole Valley lines were constructed between 1847 and 1868 by the London, Brighton and