Mortlake Mortlake. The Waterloo to Reading railway line runs through Mortlake, which has a pedestrianised riverside, two riverside pubs and a village green. The Boat Race finishes at Mortlake every March/April. The Mortlake and Barnes Common ward of the London Borough of Richmond upon Thames has proved highly marginal. In the 2010 local elections local Liberal Democrats lost all three seats to local Conservatives, the latter forming an administration on Richmond Council. This remained the case until the 2018 local elections when the Liberal Democrats regained one of the three seats by a single vote. The Liberal Democrats also regained control
Mortlake of the Council. Richmond Park, the constituency which includes Mortlake, had changed from Liberal Democrat to Conservative in the 2010 general election, was recaptured by the Liberal Democrats in the 2016 by-election, and finally reverted to Conservative MP Zac Goldsmith in the 2017 general election by a margin of only 45 votes. The London Assembly constituency South West, which includes Mortlake, is represented by former local councillor Tony Arbour (Conservative). The place-name 'Mortlake' is first attested in the Domesday Book of 1086, where it appears as "Mortelaga" and "Mortelage", a name with two possible derivations. If the second element is