Carla Suzanne Denyer (born 24 September 1985) is a British politician who has served as the Member of Parliament for Bristol Central since 2024. She was the co-leader of the Green Party of England and Wales alongside Adrian Ramsay from 1 October 2021 to 2 September 2025.
Denyer was a city councillor in Bristol from 2015 to 2024 (initially for Clifton East ward, and following the 2016 boundary changes, for Clifton Down). She spearheaded Bristol City Council's declaration of a climate emergency in 2018, which was the first in Europe.
Early life and education Denyer was born in 1985 to John Denyer and Margaret Cooksley; the couple divorced ten years later. Her mother was a scientist, while her father worked in the aerospace industry, for the Ministry of Defence, and for QinetiQ, a defence firm.
Denyer attended Calthorpe Park Secondary School in the Hampshire town of Fleet. She completed A-levels in maths, further maths, physics, and philosophy at The Sixth Form College Farnborough. Alongside extra-curricular participation in debating and public speaking and the Explorer Scouts, she began political campaigning in sixth form by promoting fair trade and campaigning in opposition to the Iraq War.
From 2005 to 2009, Denyer studied mechanical engineering at St Chad's College, Durham,'News', Newswire (May 2018). continuing her environmental activism as an environmental representative at her college.
She went on to work in the wind energy sector, moving to Bristol and working for a Bristol-based renewable energy consultancy, GL Garrad Hassan,Robert Buckland, 'Recognition for Bristol firms that go extra mile to encourage sustainable travel ', Bristol Business News (4 December 2013).Fiona Harvey, 'Climate takes centre stage as Green party launches campaign', The Guardian (6 November 2019). from 2009 until shifting her career to politics.Henry Edwardes-Evans, 'S&P Global Platts Interview: UK Green Party's Carla Denyer', Platts European Power Daily, vol. 21; no. 213 (1 November 2019).Gaby Hinsliff, '"I'm not going to be bullied into silence." The women defying abuse to stand as MPs', The Guardian (21 November 2019). According to an interview in Vogue, this shift came as Denyer realised that "actually, the technology needed to get to net zero is pretty much there. That's not the problem. The problem is those in power. [...] She realised she needed to get into politics and change the system".
Political career
Early career Denyer joined the Green Party in 2011. From 2012 she developed an interest in ethical investment and specifically fossil-fuel divestment through participation in the Quakers and the UK Fossil Free campaign. She participated in bringing about British Quakers' divestment from fossil fuels.Carla Denyer, 'My journey with fossil fuels divestment', The Bristol Cable (10 March 2017). Following her work on the Quakers' divestment, Denyer became a leading figure in the campaign for the University of Bristol to divest from fossil fuels, first tabling a motion in her capacity as a city councillor sitting on one of the university's governance bodies in November 2015.'Don't invest in fossil fuel firms', Bristol Post (17 November 2015). Despite initial defeats,'Demo in protest over uni link to fossil fuel firms', Bristol Post (2 December 2016), 2–3. the campaign succeeded in March 2017.Esme Ashcroft, 'People power Uni stops investing in fossil fuel firms', Bristol Post (10 March 2017), 16–17.Ellen Jones, 'Divest! Divest Now! An Interview with UoB's Fossil Free Society', Epigram (26 February 2018). Denyer has also been active since at least 2015 in the ongoing campaign calling on Avon Pension Fund to divest from fossil fuels.Natalie Tuck, 'Avon Pension Fund to become 'fossil free' after successful vote', Pensionsage: The Leading Pensions Magazine (16 December 2015).'Green action: Bristol City Council votes in favour of "fossil free" pensions', European Union News (18 December 2015).Adam Cantwell-Corn, 'Fossil fuelled public sector pensions reveal deep political faultlines on climate crisis action', The Bristol Cable, 24 (1 March 2021).
Bristol councillor Denyer was first elected to Bristol City Council as a Green Party councillor for Clifton East in 2015.'Green votes quadrupled in general election', European Union News (11 May 2015). After boundary changes, she was elected as councillor for Clifton Down in 2016. She was re-elected as a councillor in 2021 with an increased majority, in the context of growing support for the Green Party in Bristol.Ashna Hurynag, 'A Green wave overtook Bristol in the election, and it appears climate change wasn't the only reason', Sky News (17 May 2021). In June 2021, Denyer was appointed as the Green Party's housing and communities spokesperson, and in July 2021, she took on the role of shadowing Bristol's Labour cabinet on climate and ecology, holding the position jointly with Lily Fitzgibbon.
In November 2023, Denyer announced that she would not seek re-election as councillor in the 2024 Bristol City Council election in order to focus on her campaign for election as member of parliament for Bristol Central constituency.
Activities In 2018, Denyer proposed a successful motion to bring about Bristol City Council's declaration of a climate emergency.Matthew Taylor, 'Bristol plans to become carbon neutral by 2030', The Guardian (14 November 2018). This was the first such declaration by a UK council, and one of the first in the world.James Ellsmoor, 'Climate Emergency Declarations: How Cities Are Leading The Charge', Forbes (20 July 2019).Julia Lagoutte, 'What next after declaring a climate emergency?', Big Green Politics Podcast (30 July 2019).'Change starts here: Carla Denyer', Green World (9 August 2019). Denyer has been seen as a key figure in launching a movement of government climate-emergency declarations.Rebecca Willis, Too Hot to Handle?: The Democratic Challenge of Climate Change (Bristol: Bristol University Press, 2020), p. 106 .Chloe Chaplain, '"It's within reach": The Greens battling a huge Labour majority in Bristol', The Independent (10 December 2019). BBC news credited Denyer with the idea of first putting forward 'the idea of a local area declaring a climate emergency'.Lindsay Brown, 'Climate change: What is a climate emergency?', BBC News (3 May 2019). Denyer's motion was described in The Independent as "the historic first motion" which by July 2019 had been "copied by more than 400 local authorities and parliament".Alex Morss, 'If a city as green as Bristol will struggle to meet emissions targets, how can the rest of the country?', The Independent (July 19, 2019)
As of 2019, Denyer remained critical of Bristol's progress towards achieving its goal,Anna Bawden, 'Climate crisis: can councils deliver on bold promises to cut emissions?', The Guardian (10 July 2019). and particularly of the planned expansion of Bristol Airport.Greg Dawson, 'Climate change: "I want to look my daughter in the eye"', BBC Politics Live (15 March 2019). She criticised the UK government's lack of support for environmental policies, noting that the political will existed in local government.Matthew Taylor, 'Council efforts to tackle climate crisis "hampered by UK government"', The Guardian (13 November 2020). In 2020, she welcomed Bristol's declaration of an ecological emergency due to loss of wildlife.Steven Morris, 'Bristol declares ecological emergency over loss of wildlife', The Guardian (4 February 2020).
Denyer also campaigned extensively on transport; work included trying to introduce congestion charging to Bristol'Budget Greens call for higher tax on rich and congestion zone', Bristol Post (19 February 2018), 22–23. and seeking 'a major upgrade of Bristol's transport, with safe connected cycling routes, a joined up and efficient bus network and a levy on corporate parking to raise funds for more improvements'.Rosie Neville, 'In conversation with Carla Denyer, co-leader of the Green Party: Bristol's Clean Air Zone and the consequences of its delay', Epigram (18 December 2022).Carla Denyer, 'Why we need to take back control of our buses', Bristol247.com (17 November 2019). In June 2021, she criticised Bristol Airport for claiming to be on course to be carbon neutral without taking emissions from flights, travel to and from the airport, or car parking into account. In 2020, she helped institute a Green Party policy to ban advertisements for polluting products such as SUVs and flights,Jon Stone, 'Greens call for advertising ban on polluting cars and flights', The Independent (11 October 2020). and pushed for a similar policy in advertising controlled by Bristol City Council.Adam Postans, 'Council happy to pay price for adverts ban', Western Daily Press (4 November 2020).
Her other campaigning has included improving conditions for people renting their homes,'Call for clampdown on rogue landlords to be spread citywide', Bristol Post (19 August 2016), 14–15.Conor Shilling, 'Councillor calls for further landlord licensing in Bristol', Landlord Today (19 August 2016). and opposing council tax increases for poorer taxpayers'Bristol council tax relief cuts could be 'illegal' say opponents', BBC News (17 August 2017).Adam Cantwell-Corn, 'Victory for campaign as mayor scraps council tax changes', The Bristol Cable (19 October 2017). while seeking what Denyer has described as "more ambition from the mayor's office in tackling austerity" by calling for the city to raise the top band of council tax.
European and UK Parliament candidacies In May 2019, Denyer unsuccessfully stood as one of the Green candidates for South West England in the European Parliament Election.William Rimell, 'EU Elections: What are you voting for? Here's our guide to May 23', Salisbury Journal (19 May 2019). The elections saw her refusing to share a platform with the UKIP candidate Carl Benjamin regarding a hustings planned to be held at the University of Bristol, arguing that "while the protection of free speech is important, we have to guard against the far-right taking advantage of it".Steven Morris, 'University cancels EU election debate over Ukip candidate', The Guardian (15 May 2019).
In November 2019, she stood as the Green candidate for Bristol West in the 2019 UK general election.Ellie Pipe, 'Greens Prepare to Fight for Bristol West as Parliamentary Candidates Announced', Bristol24/7 (16 September 2019). The seat was seen as a target for the Green Party. The Greens participated in the Unite to Remain campaign,Danny Shaw, 'Meet Carla Denyer: The Green candidate aiming to take Bristol West from Labour', The Tab (18 November 2019). leading to discussion as to whether she or the standing Labour MP Thangam Debbonaire was the more convincing candidate for pro-EU voters.'Why the Greens think they can win Bristol West in the 2019 election', Bristol Post (7 November 2019).Chris Jarvis, 'Why Greens in English marginals should vote Labour not Lib Dem', Left Foot Forward (11 November 2019).Lawrence Wakefield, 'Campus constituencies: where do student voters wield the most power?', The Guardian (28 November 2019). Denyer argued that polls predicting that Debbonaire would receive 60% of the vote didn't take into account the Liberal Democrats standing down in favour of the Greens. In the event, Denyer came second, with 24.9% of the vote to Debbonaire's 62.3%."Bristol West Parliamentary constituency", BBC News (accessed 14 December 2019).
In June 2022, Denyer announced her intention to run for MP for Bristol West in the 2024 general election. In June 2023, Denyer began her campaign to become MP for Bristol Central, the successor constituency to Bristol West created from the 2023 Periodic Review of Westminster constituencies.
Co-leader of the Green Party