Green Party

The Green Party of England and Wales is a left-leaning political party founded in 1973 as the Ecology Party, adopting its current name in 1990. Consistently anti-war in doctrine, it returned its strongest Westminster result at the 2024 general election, winning four seats, including those of co-leaders Carla Denyer and Adrian Ramsay, giving it a voice in the United Kingdom Parliament for the first time in over a decade.

The party is now providing the organisational backbone of a cross-party opposition bloc against British involvement in the 2026 Iran operations. Alongside the newly formed Your Party and Labour backbenchers, the Greens are central to a Coalition that cuts across party lines in Westminster . This comes as YouGov polling showed 58% of Britons oppose US use of UK bases for Iran strikes .

The party faces a structural tension: four seats give it louder dissent than electoral weight, but cannot force a parliamentary vote without Keir Starmer's Labour backbenchers breaking more decisively. Whether the Coalition can translate public opposition into a binding parliamentary constraint on the government remains the open question.