An Act of 1948 confirmed a 1945-implemented split-up of all seats of more than 100,000 electors, of Sutton and Cheam Urban District to create Sutton and Cheam (UK Parliament constituency) to the north-east. Removal of a broad western area to form Esher ensued in 1950. As such it remained in the 1970 review-implementing Act. The 1983 reforms saw more than its renaming and technical abolition, the seat shed in the south the former Leatherhead Urban District to Mole Valley created that year.