There have been a considerable number of small changes to the Greater London

Greater London

Greater London is the top-level administrative division of England covering London. It was created in 1965 and spans the City of London, including Middle Temple and Inner Temple, and the 32 London boroughs. This territory is coterminate with the London Government Office Region and the London...

 boundary since its creation in 1965. The most significant of these were the 1969 transfers of Knockholt

Knockholt

Knockholt is a village and civil parish in Kent, England, lying approximately 5 miles south of Orpington and 3 miles northwest of Sevenoaks. It is part of the Sevenoaks district and according to the 2001 census it had a population of 1,166...

 to Kent and Farleigh

Farleigh, Surrey

Farleigh is a village in Surrey, England about 5 miles to the South East of Croydon.The village lay within the Anglo-Saxon administrative division of Tandridge hundred....

 to Surrey and a series of minor adjustments during the 1990s which realigned the boundary to the M25 motorway

M25 motorway

The M25 motorway, or London Orbital, is a orbital motorway that almost encircles Greater London, England, in the United Kingdom. The motorway was first mooted early in the 20th century. A few sections, based on the now abandoned London Ringways plan, were constructed in the early 1970s and it ...

 in some places.

Date	Legislation	Effect
1 April 1965	London Government Act 1963 London Government Act 1963 The London Government Act 1963 is an Act of the Parliament of the United Kingdom, which recognised officially the conurbation known as Greater London and created a new local government structure for the capital. The Act significantly reduced the number of local government districts in the area,...	Greater London Greater London Greater London is the top-level administrative division of England covering London. It was created in 1965 and spans the City of London, including Middle Temple and Inner Temple, and the 32 London boroughs. This territory is coterminate with the London Government Office Region and the London...  created from the County of London County of London The County of London was a county of England from 1889 to 1965, corresponding to the area known today as Inner London. It was created as part of the general introduction of elected county government in England, by way of the Local Government Act 1888. The Act created an administrative County of... , most of Middlesex Middlesex Middlesex is one of the historic counties of England and the second smallest by area. The low-lying county contained the wealthy and politically independent City of London on its southern boundary and was dominated by it from a very early time...  and parts of Essex, Kent, Surrey and Hertfordshire
1 April 1969	The Greater London, Kent and Surrey Order, 1968	Changes to the Bromley/Croydon/Kent/Surrey boundary: Transfer of Knockholt Knockholt Knockholt is a village and civil parish in Kent, England, lying approximately 5 miles south of Orpington and 3 miles northwest of Sevenoaks. It is part of the Sevenoaks district and according to the 2001 census it had a population of 1,166...  to Kent and Farleigh Farleigh, Surrey Farleigh is a village in Surrey, England about 5 miles to the South East of Croydon.The village lay within the Anglo-Saxon administrative division of Tandridge hundred....  to Surrey
1 April 1970	The Greater London and Surrey Order, 1970	Changes to the Richmond-upon-Thames/Surrey boundary
1 April 1993	The Greater London and Kent (County Boundaries) Order 1992	Changes to the Bexley/Kent boundary
1 April 1993	The Greater London and Hertfordshire (County Boundaries) Order 1992	Changes to the Barnet/Harrow/Hertfordshire boundary
1 April 1994	The Heathrow Airport (County and London Borough Boundaries) Order 1993	Changes to the Hillingdon/Hounslow/Surrey/Buckinghamshire boundary: some alignment to the M25 motorway M25 motorway The M25 motorway, or London Orbital, is a orbital motorway that almost encircles Greater London, England, in the United Kingdom. The motorway was first mooted early in the 20th century. A few sections, based on the now abandoned London Ringways plan, were constructed in the early 1970s and it ...  and Heathrow Airport London Heathrow Airport London Heathrow Airport or Heathrow , in the London Borough of Hillingdon, is the busiest airport in the United Kingdom and the third busiest airport in the world in terms of total passenger traffic, handling more international passengers than any other airport around the globe...  brought entirely within Greater London †
1 April 1994	The Greater London and Surrey (County and London Borough Boundaries) Order 1993	Changes to the Croydon/Surrey boundary †
1 April 1994	The Greater London and Surrey (County and London Borough Boundaries) (No. 2) Order 1993	Changes to the Richmond/Surrey boundary †
1 April 1994	The Greater London and Surrey (County and London Borough Boundaries) (No. 3) Order 1993	Changes to the Croydon/Sutton/Surrey boundaries
1 April 1994	The Greater London and Surrey (County and London Borough Boundaries) (No. 4) Order 1993	Changes to the Hounslow/Surrey boundary
1 April 1994	The Greater London, Kent and Surrey (County Boundaries) Order 1993	Changes to the Bromley/Kent/Surrey boundary: Southern tip of Bromley at Tatsfield Tatsfield Tatsfield is a village of some 1800 inhabitants located in the Tandridge district of Surrey, England, and 16 miles south south-east of Charing Cross in London...  to Surrey †
1 April 1994	The Essex, Greater London and Hertfordshire (County and London Borough Boundaries) Order 1993	Changes to the Enfield/Hertfordshire boundary: some alignment to the M25 motorway
1 April 1994	The Essex and Greater London (County and London Borough Boundaries) (No.2) Order 1993	Changes to the Havering/Essex boundary: some alignment to the M25 motorway and transfer of part of Great Warley Great Warley Great Warley is a village in the Brentwood borough of Essex, England. It is situated to the far south west of the county and near to the Greater London boundary and the M25 motorway.Consecrated in 1904, the Grade I listed parish church, St...  from Greater London †
1 April 1995	The Berkshire, Buckinghamshire and Surrey (County Boundaries) Order 1994	Changes to the Surrey/Buckinghamshire/Berkshire boundary give Greater London and Berkshire a new common boundary
1 April 1995	The Essex and Greater London (County Boundaries) Order 1993	Changes to the Redbridge/Essex boundary: Transfer of area around Grange Hill tube station Grange Hill tube station Grange Hill station is a London Underground station on the Central Line which lies in Chigwell in the Epping Forest district of Essex immediately to the west of the boundary with Hainault in the London Borough of Redbridge. The station is between Hainault tube station and Chigwell tube station...  to Greater London
1 April 1995	The Greater London and Surrey (County and London Borough Boundaries) Order 1994	Changes to the Kingston/Sutton/Surrey boundary † (Some changes to the Metropolitan Police District Metropolitan Police District The Metropolitan Police District is the police area which is policed by London's Metropolitan Police Service. It currently consists of Greater London, excluding the City of London.-History:...  were later repealed)

† = also altered the boundaries of the Metropolitan Police District

Metropolitan Police District

The Metropolitan Police District is the police area which is policed by London's Metropolitan Police Service. It currently consists of Greater London, excluding the City of London.-History:...

Proposed changes

In 2004, following a poll, a move was mooted by the London Assembly

London Assembly

The London Assembly is an elected body, part of the Greater London Authority, that scrutinises the activities of the Mayor of London and has the power, with a two-thirds majority, to amend the mayor's annual budget. The assembly was established in 2000 and is headquartered at City Hall on the south...

 to entirely align the Greater London boundary to the M25 motorway. The Mayor of London suggested in 2005 that Dartford

Dartford

Dartford is the principal town in the borough of Dartford. It is situated in the northwest corner of Kent, England, east south-east of central London....

, Thurrock

Thurrock

Thurrock is a unitary authority with borough status in the English ceremonial county of Essex. It is part of the London commuter belt and an area of regeneration within the Thames Gateway redevelopment zone. The local authority is Thurrock Council....

 and Watford

Watford

Watford is a town and borough in Hertfordshire, England, situated northwest of central London and within the bounds of the M25 motorway. The borough is separated from Greater London to the south by the urbanised parish of Watford Rural in the Three Rivers District.Watford was created as an urban...

 could be given the opportunity to vote on inclusion in Greater London in local referendum

Referendum

A referendum is a direct vote in which an entire electorate is asked to either accept or reject a particular proposal. This may result in the adoption of a new constitution, a constitutional amendment, a law, the recall of an elected official or simply a specific government policy. It is a form of...

s. In 2010 it was suggested that an extension of the boundary to include Elmbridge

Elmbridge

Elmbridge is a local government district and borough in Surrey, England. Its council is based in Esher. The district has only one civil parish, which is Claygate...

was being considered.