1997–2010: For the 1997 general election, in order to effect an increase in Berkshire's representation from 7 to 8 MPs in accordance with the Fourth Periodic Review of Westminster Constituencies, the Windsor and Maidenhead constituency was abolished and two separate constituencies of Maidenhead and Windsor were created. The majority of the electorate in the abolished constituency was included in Maidenhead, whilst Windsor was joined by Eton and Bray. It also included a ward of Slough Borough Council north of the Thames, which was transferred from the Borough Constituency of Slough, and was extended southwards to include a part of the abolished constituency of East Berkshire, including Ascot and Sunningdale.