Brexit was a disastrous act of national self-harm. Britain needs EU membership to bring growth and security in an increasingly volatile world, says London mayor Sadiq Khan

Nigel Farage believes Andy Burnham’s decision to open the door to returning to the EU could benefit Reform. Regardless, the decision to reignite the Brexit debates will play a central role when Britai...

Nige is not rattled that the UK likes its new PM. Or that Reform is second in the polls. Oh no. Because Nige believes in Nige

Ian Dunt: Leaving the EU was a terrible, terrible mistake

Senior Downing Street officials reach out to thinktanks and pollsters as they look to test backing for reversing Brexit

Spain's Prime Minister Pedro Sanchez and France's President Emmanuel Macron expressed enthusiasm on Wednesday for Britain rejoining ​the EU, and agreed Europe must strengthen its trade defences ‌again...

Editorial: Andy Burnham talks of going ‘all the way’ as the government reviews relations with the bloc – he is right to put rejoining back on the table

The prime minister says he wants to open a debate about the UK’s future relationship with Europe

Mathilda Mallinson: It's time to start writing policy for real problems, not perceived ones

Decision follows disclosures that OpenAI agents searching government websites had acted in unexpected ways

Stella Creasy, chair of the influential Labour Movement for Europe, has said Mr Burnham only has six months to start taking action ahead of a pro-EU rally at the Labour Party conference

The YouGov MRP poll points to a leftwing coalition and an end to Brexit Britain – and all the Tories and Reform can do is blame each other from the sidelines, writes political editor David Maddox

Reform UK slide from first place to third in latest YouGov MRP polling – with the UK headed for a hung parliament

Trump tries to dominate at the UN as his approval ratings plummet and even some Republicans distance themselves from him

Industry leaders call on government to protect homegrown produce in the interest of national security

The Brexit reset which began under Sir Keir Starmer can go much further, senior EU figure says

Polling suggests Andy Burnham is attracting progressives back to Labour, motivated by desire to stop Nigel Farage

As Andy Burnham refuses to rule out a pledge to rejoin the EU in Labour’s next manifesto, new YouGov polling for Best for Britain suggests he has no choice but to make the commitment if he wants to re...

The prime minister unveiled plans for a new National Centre for Information Defence at the United Nations General Assembly in New York

💷🌊 We pay for sewage to be properly treated. Yet our waterways are still being polluted. If the service isn’t being delivered, why should we keep paying for it? Demand The People’s Refund. Add your na...

New in-depth polling finds 35 per cent of voters would choose EU membership as their preferred policy option – with just 11 per cent wanting looser ties with the bloc

‘Radical’ report likely to influence party’s platform also proposes abolishing inheritance and capital gains taxes

Ed Davey argues tax threshold freeze is ‘holding back teachers and nurses’ as he lays out plan to rejoin EU’s single market and customs union

‘Godzilla-level’ phenomenon is supercharging the climate crisis and will have a huge impact on communities across the world

At a low-key event, Helen Jenner replaces Dan Thomas, who was arrested on suspicion of assault and gets warm words from Farage

Any additional emissions from a UK gasfield are incompatible with climate targets.

The celebrity physicist has joined officials in condemning the UK’s decision to withdraw £45 million in funding from the Large Hadron Collider

Exclusive: Impact of Vladimir Putin and Donald Trump on global security means Andy Burnham’s Brexit ‘red lines’ are putting the UK at risk, Lib Dems say on the first day of their annual conference in ...

Andy Burnham’s focus on domestic problems leads some to fear issue has dropped off government’s radar

On 12 October, Parliament will debate the UK's future relationship with Europe, after a government petition got over 100,000 signatures. Will you write to your MP to ask them to attend the debate?

Editorial: Nigel Farage needs to end the impression that his party is the political wing of the crypto industry

Record-high support for rejoining the EU has been highlighted by University of Strathclyde polling expert Sir John Curtice. But if opinion on Brexit…

While the UK is still struggling to reset ties with the EU, baggage-free and mineral-rich Canada has easily walked away with a deal that has sent shockwaves across the Atlantic, says Anchal Vohra

Ursula von der Leyen has opened door for Canada to become associate member to deepen links in ‘openly hostile world’

US president responds as Mark Carney seeks to move closer to Europe and diversify defence ties

As Russians vote this weekend, remember that Britain is not immune to the cynical tactics and corrosion of trust that keep him in power, says Guardian columnist Rafael Behr

Using his social-media megaphone to roil the waters, Musk is promoting a new anti-immigration party.

Editorial: The architects of Brexit know it has failed. That presents Andy Burnham with an opportunity to set a bolder new agenda

Plans to strengthen legislation already going through parliament might mean donors having to meet stricter UK residence requirements

The man who once helped Richard ‘Dirty’ Desmond save a load of tax was wheeled out to face Laura Kuenssberg

Reform UK’s miserabilist streak is Nigel Farage’s asset, and his problem

In a social media post, Dario Amodei proposed a plan including third-party evaluations of AI systems

Undersea cables to England could deliver more power to the island if talks with Brussels go well, a key industry figure says