Rickmansworth

Rickmansworth (/ˈrɪkmənzwərθ/) is a town in south-west Hertfordshire, England, located approximately 17 miles (27 km) north-west of central London, 5 miles (8 km) south-west of Watford and inside the perimeter of the M25 motorway. The town is mainly to the north of the Grand Union Canal (formerly the Grand Junction Canal) and the River Colne.

Rickmansworth is the administrative seat of the Three Rivers District Council; the confluence of the River Chess and the River Gade with the Colne in Rickmansworth inspired the district's name. The enlarged Colne flows south to form a major tributary of the River Thames.

The town is served by the Metropolitan line of the London Underground and by Chiltern Railways of the National Rail network, between London Marylebone and Aylesbury.