List of Crossings of The River Thames - Barrier and Boundary

Barrier and Boundary

Until sufficient crossings were established, the river provided a formidable barrier, with Belgic tribes and Anglo-Saxon kingdoms being defined by which side of the river they were on. When English counties were established their boundaries were partly determined by the Thames. On the northern bank were the historic counties of Gloucestershire, Oxfordshire, Buckinghamshire, Middlesex and Essex. On the southern bank were the counties of Wiltshire, Berkshire, Surrey, and Kent. However the permanent crossings that have been built to date have changed the dynamics and made cross-river development and shared responsibilities more practicable. In 1965, upon the creation of Greater London, the London Borough of Richmond upon Thames incorporated areas that had been part of both Middlesex and Surrey; and changes in 1974 moved some of the boundaries away from the river. For example, some areas that had been part of Berkshire became part of Oxfordshire, what had been Buckinghamshire became part of Berkshire, and what had been Middlesex became part of Surrey. On occasion – for example in rowing – the banks are still referred to by their traditional county names.