M25 motorwayThe M25 or London Orbital Motorway is a major road encircling most of Greater London. The motorway is one of the most important roads in the UK and one of the busiest. Margaret Thatcher opened the final section in 1986, making the M25 the longest ring road in Europe upon opening. The Dartford Crossing completes the orbital route but is not classed as motorway; it is classed as a trunk road and designated as the A282. In some cases, including notable legal contexts such as the Communications Act 2003, the M25 is used as a de facto alternative boundary for Greater London.
Slade GreenSlade Green is an area of South East London, England, within the London Borough of Bexley. It lies northeast of Bexleyheath, northwest of Dartford and south of Erith, and east-southeast of Charing Cross. Historically Slade Green was part of the county of Kent. In 1965 it became part of the new ceremonial county of Greater London. An Anglo-Saxon dictionary asserts that "Slade" most commonly meant a broad strip of grass-covered land. The London Borough of Bexley suggests the current name most likely derives from Saxon "Slade", with their definition being low-lying ground.
River ThamesThe River Thames (tɛmz ), known alternatively in parts as the River Isis, is a river that flows through southern England including London. At , it is the longest river entirely in England and the second-longest in the United Kingdom, after the River Severn. The river rises at Thames Head in Gloucestershire and flows into the North Sea near Tilbury, Essex and Gravesend, Kent, via the Thames Estuary. From the west it flows through Oxford (where it is sometimes called the Isis), Reading, Henley-on-Thames and Windsor.
