The historic county of Middlesex in south east England was represented in Parliament from the 13th century. This article provides a list of constituencies constituting the Parliamentary representation from Middlesex.

From early times the City of London and the rest of Middlesex had different sheriffs and other administrative arrangements. However apart from this the historic county was not divided, for administrative purposes, until 1889. In that year the urbanised east of the county became part of the new administrative county of London; administered by the London County Council. The less built up north and west of the county formed the administrative county of Middlesex; administered by Middlesex County Council.

In 1965 the Greater London Council was formed. Greater London absorbed the administrative county of London and surrounding territory, including almost all of the administrative county of Middlesex. The south west part of the historic county (then the Staines Urban District and the Sunbury on Thames Urban District but from 1974 the borough of Spelthorne) was transferred to the administrative county of Surrey. A smaller part of the historic county, in the Potters Bar area, was transferred to the administrative county of Hertfordshire. In 1995 the village of Poyle, which had been a small area in the north of Spelthorne, was transferred to Berkshire.

The first part of this article covers the constituencies wholly or predominantly within the area of the historic county of Middlesex, both before and after the administrative changes of 1889 and 1965. The second part refers to constituencies mostly in another historic county, which included some territory from the historic county of Middlesex. The summaries section only refers to the constituencies included in the first section of the constituency list.

List of constituencies Article names are followed by (UK Parliament constituency). The constituencies which existed in 1707 were those previously represented in the Parliament of England.

In the distribution of seats in effect from 1974 to 1983 the official name of the Greater London seats included a London Borough prefix. In most cases this is not used in the article names. There were also instances when a distinctive constituency name had, at different periods, been prefixed by different borough names. In those cases the distinctive constituency name alone is usually used in the article name. See the notes column for further details.

Key to abbreviations:- (Type) BC Borough constituency, CC County constituency, UC University constituency. (Administrative County in Notes) B shire county of Berkshire, GL Greater London (from 1965), H administrative/shire county of Hertfordshire (from 1965), L administrative county of London (1889–1965), M1 historic county of Middlesex (to 1889), M2 administrative county of Middlesex (1889–1965), S administrative/shire county of Surrey (from 1965).

Constituencies wholly or predominantly in the historic county

ConstituencyTypeFromToMPsNotes Acton CC (1918–1950) 1918 1983 1 M2, GL: Ealing, 1974-1983 BC (1950–1983)Barons Court BC 1955 1974 1 L, GLBethnal Green BC 1950 1974 1 L, GL Bethnal Green and Bow BC 1974 1983 1 GL: Tower Hamlets, 1974-1983 1997 *Bethnal Green and Stepney BC 1983 1997 1 GLBethnal Green North East BC 1885 1950 1 M1, LBethnal Green South West BC 1885 1950 1 M1, LBow and Bromley BC 1885 1950 1 M1, L: Tower Hamlets, 1885–1918; Poplar, 1918–1950Bow and Poplar BC 1983 1997 1 GLBrent Central BC next * 1 GLBrent East BC 1974 next 1 GLBrent North BC 1974 * 1 GLBrent South BC 1974 next 1 GLBrentford CC 1885 1918 1 M1, M2Brentford and Chiswick CC 1918 1974 1 M2, GLBrentford and Isleworth BC 1974 * 1 GL: Hounslow, 1974-1983 Chelsea BC 1868 1997 2 (1868–1885) M1, L, GL: Kensington and Chelsea, 1974-1983 1 (1885–1997)Chelsea and Fulham BC next * 1 GL Ealing CC (1885–1918) 1885 1945 1 M1, M2 BC (1918–1945)Ealing Acton BC 1983 1997 1 GLEaling, Acton and Shepherd's Bush BC 1997 next 1 GLEaling Central and Acton BC next * 1 GLEaling East BC 1945 1950 1 M2Ealing North BC 1950 next 1 M2, GLEaling South BC 1950 1974 1 M2, GLEaling Southall BC 1983 * 1 GLEaling West BC 1945 1950 1 M2Edmonton BC 1918 * 1 M2, GL: Enfield, 1974-1983Enfield CC 1885 1950 1 M1, M2Enfield East BC 1950 1974 1 M2, GLEnfield North BC 1974 * 1 GLEnfield Southgate BC 1983 * 1 GLEnfield West BC 1950 1974 1 M2, GLFeltham BC 1955 1974 1 M2, GLFeltham and Heston BC 1974 * 1 GL: Hounslow, 1974-1983 Finchley CC (1918–1950) 1918 1997 1 M2, GL: Barnet, 1974-1983 BC (1950–1997)Finchley and Golders Green BC 1997 * 1 GL Finsbury BC 1832 1885 2 M1 1918 1950 1 LFinsbury Central BC 1885 1918 1 M1, LFinsbury East BC 1885 1918 1 M1, L Fulham BC 1885 1918 1 M1, L, GL: Hammersmith, 1974-1983 1955 1997Fulham East BC 1918 1955 1 LFulham West BC 1918 1955 1 LHackney BC 1868 1885 2 M1 Hackney Central BC 1885 1950 1 M1, L, GL 1955 1983Hackney North BC 1885 1950 1 M1, LHackney North and Stoke Newington BC 1950 * 1 L, GL: Inc. Stoke Newington & Hackney North 1950-74Hackney South BC 1885 1955 1 M1, LHackney South and Shoreditch BC 1974 * 1 GL Hammersmith BC 1885 1918 1 M1, L, GL 1983 1997 next *Hammersmith and Fulham BC 1997 next 1 GLHammersmith North BC 1918 1983 1 L, GLHammersmith South BC 1918 1955 1 LHampstead BC 1885 1983 1 M1, L, GL: Camden, 1974-1983Hampstead and Highgate BC 1983 next 1 GLHampstead and Kilburn BC next * 1 GLHarrow CC 1885 1945 1 M1, M2Harrow Central BC 1950 1983 1 M2, GLHarrow East BC 1945 * 1 M2, GLHarrow West BC 1945 * 1 M2, GLHayes and Harlington BC 1950 * 1 M2, GL: Hillingdon, 1974-83 Hendon CC 1918 1945 1 M2, GLBC 1997 nextHendon North BC 1945 1997 1 M2, GL: Barnet, 1974-1983Hendon South BC 1945 1997 1 M2, GL: Barnet, 1974-1983Heston and Isleworth BC 1945 1974 1 M2, GLHolborn BC 1885 1950 1 M1, L: Inc. Finsbury, 1885–1918Holborn and St Pancras BC 1983 * 1 GLHolborn and St Pancras South BC 1950 1983 1 L, GL: Camden, 1974-1983 Hornsey CC (1885–1918) 1885 1983 1 M2, GL: Haringey, 1974-1983 BC (1918–1983)Hornsey and Wood Green BC 1983 * 1 GLIslington Central BC 1974 1983 1 GLIslington East BC 1885 1974 1 M1, L, GLIslington North BC 1885 * 1 M1, L, GLIslington South BC 1885 1950 1 M1, LIslington South and Finsbury BC 1974 * 1 GLIslington South West BC 1950 1974 1 L, GLIslington West BC 1885 1950 1 M1, L Kensington BC 1974 1997 1 GL: Kensington and Chelsea, 1974-1983 next *Kensington and Chelsea BC 1997 next 1 GLKensington North BC 1885 1974 1 M1, L, GLKensington South BC 1885 1974 1 M1, L, GLLimehouse BC 1885 1950 1 M1, L: Tower Hamlets, 1885–1918; Stepney, 1918–1950 Cities of London and Westminster BC 1950 1974 1 L, GL: See City of London and Westminster South 1997 * City of London BC 1298 1950 4 (1295-1654) M1, L 1, GL 6 (1654–1658) 4 (1658–1885) 2 (1885–1950)City of London and Westminster South BC 1974 1997 1 GL: See Cities of London and WestminsterLondon University UC 1868 1950 1 M1, LMarylebone BC 1832 1885 2 M1Marylebone East BC 1885 1918 1 M1, LMarylebone West BC 1885 1918 1 M1, L Middlesex CC 1290 1885 2 (1290-1654) M1 4 (1654–1658) 2 (1658–1885)Mile End BC 1885 1950 1 M1, L: Tower Hamlets, 1885–1918; Stepney, 1918–1950Paddington BC 1974 1983 1 GLPaddington North BC 1885 1974 1 M1, L, GLPaddington South BC 1885 1974 1 M1, L, GLPoplar BC 1885 1974 1 M1, L, GL: Tower Hamlets, 1885–1918Poplar and Canning Town BC 1997 next 1 GL: Inc. part of historic county of EssexPoplar and Limehouse BC next * 1 GLSouth Poplar BC 1918 1950 1 L 2Regent's Park and Kensington North BC 1997 next 1 GLRuislip-Northwood BC 1950 next 1 M2, GL: Hillingdon, 1974-83Ruislip, Northwood and Pinner BC next * 1 GLSt George BC 1885 1918 1 M1, L: Tower Hamlets, 1885–1918St George Hanover Square BC 1885 1918 1 M1, L: See Westminster St George's 1918-1950St Marylebone BC 1918 1983 1 L, GL: City of Wesrminster, 1974-1983St Pancras East BC 1885 1918 1 M1, LSt Pancras North BC 1885 1983 1 M1, L, GL: Camden, 1974-1983St Pancras South BC 1885 1918 1 M1, LSt Pancras South East BC 1918 1950 1 LSt Pancras South West BC 1918 1950 1 LSt Pancras West BC 1885 1918 1 M1, LShoreditch BC 1918 1950 1 LShoreditch and Finsbury BC 1950 1974 1 L, GLShoreditch Haggerston BC 1885 1918 1 M1, LShoreditch Hoxton BC 1885 1918 1 M1, LSouthall BC 1945 1983 1 M2, GL: Ealing, 1974-1983Southgate BC 1950 1983 1 M2, GL: Enfield, 1974-1983 Spelthorne CC (1918–1974) 1918 * 1 M2, S BC (1974-*) Stepney BC 1885 1918 1 M1, L, GL: Tower Hamlets, 1885–1918 1950 1974Stepney and Poplar BC 1974 1983 1 GL: Tower Hamlets, 1974-1983Stoke Newington BC 1918 1950 1 LStrand BC 1885 1918 1 M1, L Tottenham CC 1885 1918 1 M1, M2, GL: Haringey, 1974-1983 BC 1950 *Tottenham North BC 1918 1950 1 M2Tottenham South BC 1918 1950 1 M2Tower Hamlets BC 1832 1885 2 M1 Twickenham CC (1918–1945) 1918 * 1 M2, GL: Richmond upon Thames, 1974-1983 BC (1945-*) Uxbridge CC (1885–1974) 1885 next 1 M2, GL: Hillingdon, 1974-1983 BC (1974-next)Uxbridge and South Ruislip BC next * 1 GLWembley North BC 1945 1974 1 M2, GLWembley South BC 1945 1974 1 M2, GL Westminster BC 1545 1918 2 (1545-1885) M1, L 1 (1885–1918)Westminster Abbey BC 1918 1950 1 L Westminster North BC 1983 1997 1 GL next *Westminster St George's BC 1918 1950 1 L: See St George Hanover Square 1885-1918Whitechapel BC 1885 1918 1 M1, L: Tower Hamlets, 1885–1918Whitechapel and St George's BC 1918 1950 1 L: Stepney, 1918–1950Willesden East BC 1918 1974 1 M2, GLWillesden West BC 1918 1974 1 M2, GL Wood Green CC (1918–1950) 1918 1983 1 M2, GL: Haringey, 1974-1983 BC (1950–1983)

Notes:- 1 Not technically part of the administrative county of London, but it was surrounded by it and was not part of any other administrative county. 2 This constituency is strictly the South Poplar division of Poplar. As 'Poplar South Poplar' would include the borough name twice, the official name of the constituency is referred to as 'South Poplar'. The existing article calls the seat 'Poplar South' (which is in the usual form for a borough constituency, but does not match the unusual official name of the seat). A redirect exists from the official name to the article name.

Constituencies mostly in another historic county ConstituencyTypeFromToMPsNotesChipping Barnet BC 1997 1 * 1 GL: Inc. Whetstone, Friern Barnet and parts of Cockfosters and Southgate from MxHertsmere CC 1983 * 1 H: Includes Potters Bar from MxSouth Hertfordshire CC 1974 1983 1 H: Includes Potters Bar from MxWindsor CC 1997 * 1 B: Includes Poyle from Mx

Note:- 1 The constituency is in Greater London and mostly forms part of the historic county of Hertfordshire. The seat was created in 1974, but it was not until the 1997 redistribution that it included part of the historic county of Middlesex.

Summaries Summary of constituencies by type and period Type1290129815451832186818851918194519501955197419831997nextBorough - 1 2 5 7 40 42 52 49 49 43 37 34 32County 1 1 1 1 1 7 10 7 2 2 - - - -University - - - - 1 1 1 1 - - - - - -Total 1 2 3 6 9 48 53 60 51 51 43 37 34 32

Summary of members of parliament by type and period Type129012981545165416581832186818851918194519501955197419831997nextBorough - 4 6 8 6 12 16 41 43 53 49 49 43 37 34 32County 2 2 2 4 2 2 2 7 10 7 2 2 - - - -University - - - - - - 1 1 1 1 - - - - - -Total 2 6 8 12 8 14 19 49 54 61 51 51 43 37 34 32

Results

Historical representation by party A cell marked → (with a different colour background to the preceding cell) indicates that the previous MP continued to sit under a new party name.

1885 to 1918

Constituency1885188686878918921895991900190607Jan 1910Dec 1910111516BrentfordCoopeBigwoodRutherfordComptonJoynson-HicksEalingHamiltonNieldEnfieldPleydell-BouverieBowlesBranchNewmanHarrowAmbroseCoxGibbMallaby-DeeleyHornseyMcGarel-HoggStephensBalfourDundasJonesTottenhamHowardAldenUxbridgeDixon-HartlandC. MillsA. Mills

1918 to 1950