More than 100 people were arrested as climate change protesters demonstrated in central London.
Police said there had been a total of 113 arrests, the majority for public order offences and obstruction of the highway, Scotland Yard said.
Police were reported to have begun moving the protesters off Waterloo Bridge in the early hours of Tuesday after an order was made restricting them to gathering in the area around Marble Arch.
However groups of protesters remained on the streets in Westminster as rush hour approached on Tuesday morning.
Transport for London warned bus users that routes were to ‘remain on diversion / curtailment in central London due to on-going protest which are blocking roads’.
It came after environmental protesters blocked some of London’s busiest roads and vandalised Shell’s headquarters on Monday as they demanded action on climate change.
Thousands of people gathered at five central London locations in a bid to bring the capital to a standstill.
Some activists glued themselves to windows and smashed glass revolving doors at Shell’s HQ near Waterloo, while others climbed the building to spray graffiti and hang banners.
Campaign group Extinction Rebellion said it aimed to cause more than £6,000 of damage so they could be tried by a jury in Crown Court.
Police said three men and two women were arrested on suspicion of criminal damage and taken to a police station.
Elsewhere skateboarders replaced cars and lorries on Waterloo Bridge as the Thames crossing was closed to traffic and decorated with pot plants and trees.
One officer said it had been ‘very peaceful’ and the protesters had been ‘really pleasant’.
A bright pink boat became the focus for hundreds of activists stopping traffic at Oxford Circus, where some used makeshift devices to lock their arms together.
Roads were also closed and drivers diverted around Marble Arch and Piccadilly Circus.
At Parliament Square, people unfurled banners, held up placards and waved flags as speakers took to the stage.
London’s protests were part of a wider campaign which will see people in at least 80 cities in more than 33 countries hold similar demonstrations on environmental issues, campaigners said.
Organisers said: ‘The International Rebellion begins and Extinction Rebellion will be bringing London to a standstill for up to two weeks.
‘They will be blocking five of the city’s busiest and most iconic locations in a non-violent, peaceful act of rebellion where they invite people to join them for several days of creative, artist-led resistance.’
The movement has received support from actress and activist Dame Emma Thompson and former Archbishop of Canterbury Rowan Williams.
Speaking at a meditation on the eve of the protests, Dr Williams said humans had declared war on nature.
He said: ‘We are here tonight to declare that we do not wish to be at war. We wish to make peace with ourselves by making peace with our neighbour Earth and with our God.’
Scotland Yard said it had ‘appropriate policing plans’ for the demonstrations and officers would be used from across the force ‘to support the public order operation during the coming weeks’.
Police advised people travelling around London in the coming days to allow extra time for their journey in the event of road closures and general disruption.