1997–2010: The City of Rochester-upon-Medway wards of Holcombe, Horsted, Lordswood, Luton, Walderslade, Wayfield, and Weedswood, and the Borough of Tonbridge and Malling wards of Aylesford, Blue Bell Hill, Burham, Eccles and Wouldham, Ditton, Larkfield North, Larkfield South, Snodland East, and Snodland West.
2010–2024: The Borough of Medway wards of Chatham Central, Lordswood and Capstone, Luton and Wayfield, Princes Park, and Walderslade, and the Borough of Tonbridge and Malling wards of Aylesford, Blue Bell Hill and Walderslade, Burham, Eccles and Wouldham, Ditton, Larkfield North, Larkfield South, Snodland East, and Snodland West.
2024–present: Further to the
2023 periodic review of Westminster constituencies which came into effect for the
2024 general election, the constituency was defined as composing of the following as they existed on 1 December 2020: • The Borough of Medway wards of: Chatham Central; Lordswood and Capstone; Luton and Wayfield; Princes Park; Rochester South and Horsted; Walderslade. • The Borough of Tonbridge and Malling wards of: Aylesford North and Walderslade; Burham and Wouldham; Larkfield North; Larkfield South; Snodland East and Ham Hill; Snodland West and Holborough Lakes.
The Medway ward of Rochester South and Horsted was transferred in from Rochester and Strood, offset by the loss of the Tonbridge and Malling wards of Aylesford South and Ditton to the new constituency of Maidstone and Malling. Following local government boundary reviews in Medway, and Tonbridge and Malling which came into effect in May 2023, the constituency now comprises the following from the 2024 general election: • The Borough of Medway wards of: Chatham Central & Brompton (majority); Fort Horsted; Fort Pitt (most); Lordswood & Walderslade; Luton; Princes Park; Rochester East & Warren Wood (small part); Wayfield & Weeds Wood; and a very small part of Hempstead & Wigmore. • The Borough of Tonbridge and Malling wards of: Aylesford North & North Downs (most); Larkfield; Snodland East and Ham Hill; Snodland West and Holborough Lakes; Walderslade. == Members of Parliament ==