Key points
- Local elections for Southwark Council will take place on Thursday, 7 May 2026, with contests in all 22 wards and 63 seats.
- The list of candidates for Southwark wards was formally published on 9 April 2026, after the close of nominations.
- Labour is defending a majority of 46 seats out of 63, while the Liberal Democrats hold 11 and the Greens and independents share the remaining 6.
- The Green Party has nearly doubled the number of candidates it is standing across Southwark compared with the 2022 election, contesting most or all wards.
- The Liberal Democrats are standing full slates in every ward, as are Labour and the Conservatives, who fielded 63 candidates despite holding no seats after 2022.
- The Conservatives have again contested all 63 seats, even though they lost all representation four years ago and polling suggests only muted support in the borough.
- Polling and projections ahead of the election indicate Labour could lose its overall majority, with gains projected for both the Liberal Democrats and the Green Party.
- National figures such as Liberal Democrat leader Ed Davey have visited Southwark to campaign, highlighting pressure on public services and positioning the party as the main challenger to Labour.
- The Green Party’s campaign has centred heavily on housing, with London‑wide Green leader Zack Polanski accusing Labour of failing to build enough social and affordable homes in Southwark and elsewhere.
Southwark (South London News) April 15, 2026
How Labour is defending its majority
Labour has controlled Southwark Council continuously since 2010, and after the 2022 election held 52 seats out of 63, giving it a robust majority. Ahead of 2026, Labour is defending 46 seats, a slight reduction compared with four years ago, while the Liberal Democrats retain 11 seats and the Greens and independents split the remaining six. Data cited by Southwark News indicates that Labour, the Conservatives and the Liberal Democrats are each contesting every ward and seat in the borough, signalling that no area is being written off.
Polling and modelling work released by PollCheck in March 2026 projects Labour winning about 39 seats, a net loss of roughly 6 from its current total, with the Liberal Democrats on about 16 seats and the Greens on around 8. If those projections hold, Labour would lose its overall majority, leading to a council with no single party in control unless ad hoc agreements or alliances are formed.
Green surge and wider political field
As highlighted in Southwark News by Rich Brann, the Green Party has “massively increased” the number of candidates it is standing across the borough compared with 2022, with the party now fielding candidates in most or all wards. A piece for the Southwark News site notes that the Greens have nearly doubled their candidate numbers borough‑wide, expanding their presence in traditionally Labour‑strong areas.
The Green campaign has been framed by party leaders as a challenge to Labour on housing and environmental policy. As reported by the BBC, Green Party deputy leader Zack Polanski told local candidates in Southwark that Labour had “failed to build enough social and affordable homes” in the borough and across London, and pledged that if the Greens win more seats, they would push for more council‑built housing and tougher environmental standards. Southwark News coverage notes that the party hopes to convert this policy focus into concrete gains in wards where housing and climate‑change concerns are particularly salient.
Liberal Democrats seeking to break Labour’s grip
The Liberal Democrats are also sharpening their challenge. As stated by Southwark Liberal Democrats in their own material, the party is standing candidates in every ward and is positioning itself as the main alternative to Labour in the borough. Ed Davey, federal leader of the Liberal Democrats, visited Southwark on 10 April 2026 to campaign alongside local Lib Dem candidates, telling supporters that the party is “the only challenger to Labour in Southwark” and warning of growing pressure on local services under the current Labour administration.
Historically, Southwark was a key battleground between Labour and the Liberal Democrats, with the Lib Dems holding 25 seats before 2010 and then dropping back as Labour regained control. Recent projections suggest that if the Lib Dems move from 11 seats to about 16, they could overtake the Greens as the largest opposition force and play a pivotal role in any hung‑council scenario.
Role of the Conservatives and independents
The Conservatives, despite losing all their seats in 2022, have again stood a full slate of 63 candidates across Southwark in 2026. Reporting by Southwark News notes that this full‑slate strategy is partly symbolic, reflecting the party’s attempt to maintain a municipal presence in London boroughs even where support polling is weak. Current seat‑projection models suggest the Conservatives are unlikely to win any seats in Southwark this year, with all remaining seats allocated to Labour, the Liberal Democrats and the Greens.
Independent and other small‑party candidates also feature in the 2026 list, though they are projected to lose ground from the three seats they held after 2022. In some wards, such as Borough & Bankside, the mix of candidates includes Labour, Liberal Democrat, Green and independent contenders, showing a crowded field despite the overarching contest between the three main parties.
Practical details for voters
The London Borough of Southwark’s local election is scheduled for 7 May 2026, with the official list of candidates published on 9 April 2026 after the nomination deadline. The Democracy Club Elections tracker notes that the register‑to‑vote deadline is 20 April 2026, with postal‑vote applications due by 21 April, giving voters in the borough a short window to finalise their arrangements. Candidate lists for each ward, including Borough & Bankside, Camberwell Green and others, are being compiled on sites such as Who Can I Vote For, which expects to update its pages as the full list is confirmed.
Background of the development
Southwark has been under uninterrupted Labour control since 2010, following a period of no overall control between 2002 and 2010. Since then, Labour has steadily extended its majority, winning 48 seats in 2014 and 49 in 2018, before reaching 52 seats in 2022 with the Liberal Democrats holding the remaining 11. The 2022 result reinforced Labour’s position but also exposed growing discontent on issues such as housing, green‑space management and council‑tax pressure, which have since opened political space for the Liberal Democrats and the Greens.
The decision by the Green Party to run a near‑doubled number of candidates in 2026 reflects a broader trend of Green expansion in London boroughs, where the party has focused on housing, climate‑change adaptation and local‑environmental issues. At the same time, the Liberal Democrats’ renewed push in Southwark is part of a wider London‑wide strategy to exploit voter frustration with Labour‑run authorities and position themselves as credible coalition or opposition partners.
Prediction and impact on the particular audience
If current projections prove accurate, Labour will remain the largest party in Southwark after 7 May 2026 but could lose its overall majority, leading to a more fragmented council. For residents, this could mean a more contested decision‑making environment on planning, housing schemes and council‑tax levels, with the Liberal Democrats and Greens seeking to use any leverage they gain to push for more social housing, stricter environmental rules and tighter scrutiny of large‑scale developments.
For local campaigners, housing‑advocacy groups and community organisations, a hung‑council situation would open more opportunities to lobby councillors across different parties, since no single group would have automatic control over planning and budget choices. Conversely, if Labour withstands the projected losses and retains a clear majority, community groups may find it harder to shift policy direction, although Green and Lib Dem gains at the ward level could still strengthen local pressure on specific issues such as estate regeneration, park maintenance and traffic‑calming measures.
