Veteran environmental activist Swampy has left an anti-HS2 demonstration in a network of tunnels beneath central London, leaving just one protester left.

Swampy, whose real name is Dan Hooper, was arrested after leaving the site in Euston Square Gardens on Thursday morning.

With him was 18-year-old Blue Sandford, the daughter of Scottish landowner Roc Sandford, and an unnamed 22-year-old woman – both of whom were also arrested.

The network of tunnels near Euston station was discovered on 26 January, having been created in secret by protesters who oppose the redevelopment of the area for the HS2 railway line.

Eight campaigners have so far left the tunnels; however, HS2 Rebellion, the group behind the demonstration, says one person still remains underground.

On Thursday, the group said the latest three campaigners to leave were “well” and in “high spirits” after their arrest on suspicion of aggravated trespass.

“They were taken to hospital as a precaution and subsequently into custody at a London police station,” a Metropolitan Police statement said.

It added: “Officers remain at the HS2 site.”

Meanwhile, Ms Sandford said she plans to “carry on protesting with everything I have because I’m fighting for the lives of everyone I love.

“We need you too – please help.”

The update comes after geography lecturer Larch Maxey, 48, was removed from the protest site by bailiffs on Monday, before being handed over to police.

He later appeared at Highbury Corner Magistrates’ Court where he denied criminal damage and two counts of obstructing or disrupting a person engaged in lawful activity.

Swampy’s son, 16-year-old Rory Hooper, had also been part of the protest. He left the site last week.

Related posts:

Missing Sarah Everard’s last known movements – where she was seen and who she spoke to Blooming marvellous: July go-ahead for Hampton Court and Tatton Park flower shows Man charged with murdering teenage girl after incident at Chinese restaurant Britons arriving in Portugal must quarantine for 14 days if not fully vaccinated from today Southgate warns of ‘really tough game’ against ‘well-prepared, accomplished’ Germany Relaxing restrictions ‘increases the risk of vaccine-resistant strains emerging’, researchers warn New COVID cases in UK rise for first time in a week – as number of daily deaths is down Fuel crisis may last another ‘week or so’, says minister – a day after one said it was ‘under control’ BBC presenter injured while playing ‘crash test dummy’ for TV show awarded £1.6m damages Electrician accused of double murder ‘sexually assaulted dead bodies in mortuaries’, court hears Protesters carry cardboard coffins on march against smart motorways Motorist aimed gun at police parliamentary protection officer after London car chase