Organisers say at least 670,000 have turned out for what they hope will prove to be the most important anti-Brexit demonstration since the referendum

• Why the lies, Boris? The best banners from the march
  
• The Observer view on the urgent need for a fresh vote on Europe
  

4.18pm BST

Green Party MP Caroline Lucas reportedly described the huge crowd as a “beautiful sight” and called for the “re-programming” of the economy away from one that is based on inequality.

What a movement we have become. The Green Party is proud to be part of this amazing movement for a People’s Vote, because we know that democracy didn’t end on the 23rd June 2016. That referendum wasn’t the end of the story; it was the start of something new.

[Brexit] would make our poorest communities even poorer and more powerless. We must have that People’s Vote, but we must also re-programme an economy that fails so many, that is based on such inequality, that condemns us to climate breakdown.

4.09pm BST

Another round-up of photos from today, as speeches conclude.

Voters cast ballots despite attacks, equipment problems and coercion attempts

A series of deadly attacks and administrative chaos marred Afghanistan’s long-delayed parliamentary elections on Saturday, but large numbers of voters still braved the threats and long queues to cast their ballots.

There was bloodshed around the country, with nearly 200 attacks near polling stations or checkpoints, at least 28 people killed and scores more injured, the Afghan interior minister, Wais Barmak, said. One blast in Kabul, late in the day, killed at least three.

Colleagues say they want punishment for killers and ‘the authority that gave the orders’

Friends and colleagues of the Saudi journalist Jamal Khashoggi have resumed their vigil outside the Saudi consulate building in Istanbul where he was killed two weeks ago to mourn his death and demand those responsible be bought to “true justice”.

“This is not over. It’s just starting,” Turan Kışlakçı, the president of the Arab Turkish Media Association, said in a speech. “We want Jamal’s murderers to be punished … and punishment also for the authority that gave the orders.”

Actor who starred in Carol says film-makers have right to suspend disbelief

Cate Blanchett has defended straight actors playing gay characters and said she will “fight to the death” for the right to suspend disbelief.

Hollywood has been criticised for giving LGBT roles to straight actors. Scarlett Johansson dropped out of playing a transgender character in July following a backlash.

One tremor was magnitude 0.3, the level beyond which experts say fracking has to proceed with caution

A series of small earthquakes have been detected in Lancashire close to the site where fracking operations began this week.

The British Geological Survey (BGS), which provides impartial advice on environmental processes, recorded four tremors in the vicinity of the energy firm Cuadrilla’s site on Preston New Road near Blackpool on Friday.

Michael Swan, 45, and Gary Beech, 48, are accused of killing Ian Tomlin, 46

Two men have appeared in court charged with the murder of a 46-year-old man in south-west London.

Michael Swan, 45, and Gary Beech, 48, appeared at Wimbledon magistrates court over the death of Ian Tomlin.

Home secretary criticised for noting the ethnicity of the grooming gang in Huddersfield

The home secretary, Sajid Javid, has been rebuked by MPs and human rights campaigners for tweeting about “Asian paedophiles”.

Javid highlighted the case of a grooming gang in Huddersfield that raped and abused girls as young as 11. The group of men were found guilty on Friday of more than 120 offences against 15 girls.

Decision criticised by some Native American groups but senator says she is not claiming to be a citizen of any tribal nation

In a Massachusetts senatorial debate on Friday night, Elizabeth Warren defended her decision to release this week DNA test results that provide some evidence a Native American is in her bloodline, saying: “I am an open book.”

Related: Donald Trump rains insults on Elizabeth Warren after DNA test

More than 500 injured servicemen and women gather to compete in 13 sports

Prince Harry has opened the Invictus Games in Sydney, where more than 500 competitors will be taking part in 13 sports.

It is the Invictus Games to be held, following similar events in London, Orlando and Toronto.

Rap show host swore at fellow presenter Edith Bowman after losing out to her for a prize

The Radio 1 DJ Charlie Sloth has left the station after jumping on stage and swearing at a fellow presenter during an awards ceremony.

He had been due to leave his Radio 1 weekday evening show The 8th in the coming weeks but his time with the station has come to an immediate end after the incident on Thursday night.