Berwick-upon-Tweed () is a parliamentary constituency in Northumberland represented in the House of Commons of the UK Parliament since 2015 by Anne-Marie Trevelyan, a Conservative. It was a parliamentary borough in the county of Northumberland of the House of Commons of England from 1512 to 1706, then of the House of Commons of Great Britain from 1707 to 1800 and of the House of Commons of the United Kingdom from 1801 to 1885. It returned two Members of Parliament (MPs), elected by the bloc vote system. It has been a county constituency since 1885, electing one MP under the first-past-the-post system. Profile The constituency of Berwick-upon-Tweed is in the county of Northumberland. It includes as its northernmost point the town of Berwick-upon-Tweed and stretches south to include the towns of Alnwick and Amble — the Northumberland coast forms its long eastern boundary. Its length is roughly 50 miles (80 km) and its area is 2,310 square kilometres. Predominantly rural in character, this constituency is the most northerly in England and is relatively sparsely populated. History Berwick had been intermittently represented in Scottish Parliaments but it is thought that it was first enfranchised as an English borough between 1491 and 1512. It was unaffected by the Reform Act 1832 and continued to elect two MPs until it was abolished by the Redistribution of Seats Act 1885. The 1885 Act re-constituted the constituency as one of four divisions of Northumberland, each electing one MP. Boundaries 1832–1885 The contents of the parliamentary borough, as defined by the Parliamentary Boundaries Act 1832, were:The Parish of Berwick, and the Respective Townships of Tweedmouth and Spittal. 1885–1918 The contents of the county division, as defined by the Redistribution of Seats Act 1885, were:The Sessional Divisions of Bamburgh, Coquetdale East (part), Coquetdale North, Glendale, and Norhamshire and Islandshire; and the Municipal Borough of Berwick-upon-Tweed. 1918–1950 the Municipal Borough of Berwick upon Tweed the Urban Districts of Alnwick, Amble and Rothbury the Rural Districts of Alnwick, Belford, Glendale, Norham and Islandshires, and Rothbury. Gained small areas to south from Wansbeck (Amble) and Hexham (Rothbury). 1950–1983 the Municipal Borough of Berwick-upon-Tweed; the Urban Districts of Alnwick and Amble; the Rural Districts of Alnwick, Belford, Glendale, Norham and Islandshires, and Rothbury. No change (the Urban District of Rothbury had been absorbed into the Rural District). 1983–present the District of Alnwick the Borough of Berwick-upon-Tweed in the Borough of Castle Morpeth,