[2] The larger ecclesiastical parish includes the majority of the neighbouring village of Westhumble,[3] from which Mickleham is separated by the River Mole.

The philosopher and amateur botanist John Stuart Mill protested against the building of a railway though the "beautiful valley of Mickleham" in 1836.

[3] The 465 bus route runs every hour or half-hour (except nights) between Kingston upon Thames and Dorking, via Mickleham village.

[9] The hillside to the east of the village, known as Mickleham Downs, was donated to the National Trust in January 1939 by Lord Beaverbrook, the proprietor of the Daily Express newspaper, who had recently purchased the Cherkley Court estate.

The surrounding area contains many Sites of Special Scientific Interest (SSSI) including the Mickleham Downs and panoramic beauty spot of Box Hill.

As its name suggests, the river in places goes underground due to the chalk bed being dissolved, forming swallow holes (sinkholes).

Middleton, looking past his bathroom mirror one morning whilst shaving to see a mature oak tree disappear into the ground.

[12] It turned out that the river flowing underground had been gradually wearing away the supporting ground under the tree, forming a giant such hole which had collapsed.