All 1,851 councillors on all 32 London boroughs
and 4 directly-elected mayors
Map showing London borough councils by political control following the elections, as shown in the main table of results. Black denotes no overall control.
*Due to boundary changes, these seat change figures are notional changes calculated by the BBC, and so will not precisely match up with the results of the 2014 London local elections.
All London borough councillor seats were up for election. Elections to the Corporation of London were held in 2017.Mayoral contests were also held in Hackney, Lewisham, Newham and Tower Hamlets. The previous London borough elections were in 2014.
The results saw the London Labour achieve their best result in over 45 years, winning 44% of the vote, 1,128 councillors and control of 21 councils. This represented the party's second-best result in a London local election, only surpassed slightly by its 1971 total.
The London Conservatives, by contrast, lost 92 seats to finish with 508 councillors, its lowest-ever tally of seats in a London local election. However, it retained control of 7 councils, having lost two to the London Liberal Democrats. The party's vote share increased by 2%, but at 28.8%, it was still the second-worst popular vote total for the Conservatives in the history of the London Boroughs.
The London Liberal Democrats made a recovery from their all-time low in the 2014 election, gaining 34 council seats and winning two councils from the Conservatives.
Among the minor parties, the London Green Party was the most successful, winning a total of 11 council seats, just below their all-time high of 12 in the 2006 election. Support for the UK Independence Party collapsed, with the party losing all of its seats and dropping from 9.5% of the vote to 0.9%. The only other parties to win seats were the People's Alliance of Tower Hamlets (1 seat) and the Harold Hill Independent Party (1 seat).
All registered electors (British, Irish, Commonwealth and European Union citizens) who are aged 18 or over on polling day were entitled to vote in the local elections. A person who has two homes (such as a university student having a term-time address and living at home during holidays) can register to vote at both addresses as long as they are not in the same electoral area, and can vote in the local elections for the two different local councils.
|Party||Votes won||% votes||Change||Seats||% seats||Change+||Councils||Change|
|No overall control||N/A||1||1|
+Due to boundary changes, the figures for seat losses/gains are notional changes calculated by the BBC, and do not match up precisely to the London-wide results in 2014.
(Conservative councils in blue, Labour in red, Liberal Democrat in yellow, no overall control in black)
|Council||2014 result||Eve-of-poll control||2018 result||CON||LAB.||LD.||Green||Others||Turnout||Details|
|Barking and Dagenham||Labour||Labour||Labour||51||Details|
|Barnet||Conservative||No overall control||Conservative||38||25||Details|
|Hammersmith and Fulham||Labour||Labour||Labour||11||35||Details|
|Havering||No overall control||No overall control||No overall control||25||5||24[others 2]||Details|
|Kensington and Chelsea||Conservative||Conservative||Conservative||36||13||1||Details|
|Kingston upon Thames||Conservative||Conservative||Liberal Democrats||9||39||Details|
|Richmond upon Thames||Conservative||Conservative||Liberal Democrats||11||39||4||Details|
|Sutton||Liberal Democrats||Liberal Democrats||Liberal Democrats||18||33||3[others 4]||Details|
|Tower Hamlets||No overall control||No overall control||Labour||2||42||1[others 5]||Details|
There were four mayoral elections.
|Local authority||Previous Mayor||New Mayor|
|Hackney||Philip Glanville (Labour)||Philip Glanville (Labour)|
|Lewisham||Sir Steve Bullock (Labour)||Damien Egan (Labour)|
|Newham||Sir Robin Wales (Labour)||Rokhsana Fiaz (Labour)|
|Tower Hamlets||John Biggs (Labour)[n 3]||John Biggs (Labour)|
|Polling organisation/client||Sample size||Lab||Con||Lib Dem||Others||Lead|
|3 May 2018||2018 elections||n/a||43.9%||28.8%||13.0%||14.3%||15.0%|
|27-30 April 2018||Survation / 4in10||1,005||51%||31%||12%||6%||20%|
|20-24 April 2018||YouGov / QMUL||1,099||51%||29%||11%||9%||22%|
|12-15 Feb 2018||YouGov / QMUL||1,155||54%||28%||11%||7%||26%|
|25-29 Sep 2017||YouGov / QMUL||1,044||53%||29%||12%||6%||24%|
|22 May 2014||2014 elections||2,515,073||37.6%||26.4%||10.6%||25.4%||11.2%|