Commuters fought back against Extinction Rebellion environment protesters as an activist was dragged to the floor after climbing on top of a busy commuter train in East London.
Video shared on social media appeared to show a number of protesters on top of a Tube train at Canning Town station this morning.
Holding a sign which read 'Business as usual = death', the protesters were met with shouting from angry waiting commuters.
In another clip, a man was then seen dragging one of the activists to the floor by his foot.
A member of TfL staff appeared to stop people from attacking the male Extinction Rebellion member further, by intervening and holding them back.
The British Transport Police (BTP) said a number of people have been arrested after there were also protest incidents at Shadwell and Stratford station.
They confirmed had been four arrests so far at Stratford and Canning Town on the Jubilee Line.
The BTP added: "We remain at Shadwell DLR station, where specialist teams are working to remove four other protesters."
There are delays on the Jubilee line and Docklands Light Railway following the incident.
Sadiq Khan, the Mayor of London, said in a statement: "I strongly condemn the Extinction Rebellion protesters who have targeted the London Underground and DLR this morning.
"This illegal action is extremely dangerous, counterproductive and is causing unacceptable disruption to Londoners who use public transport to get to work.
"It is also an unfair burden on our already overstretched police officers. I urge demonstrators to protest peacefully and within the boundaries of the law."
Jim Fitzpatrick, Labour MP for Poplar and Limehouse, said on Twitter: "So what point is Extinction Rebellion making shutting down East London's PUBLIC transport system preventing ordinary people getting to work/school/hospital etc?!"
