Detectives investigating the abduction and rape of two women in linked attacks have released an image of a suspect.
The first victim was taken in Chingford, north London, at about 00:30 BST on Thursday, while the second was targeted 12 hours later in Edgware.
Both women, in their 20s, escaped following a struggle in Osborne Road, Watford, at about 14:30.
A man, 33, has been arrested on suspicion of conspiracy to rape. The hunt for the rapist continues.
The Met Police has released images of a suspect attempting to book a hotel room in the Watford area at about 13:00 on Thursday. When one was unavailable, he left the premises.
The suspect is described as white, of muscular build, aged in his late 20s or early 30s, with a bald head or shaved blond hair and a light-coloured short beard.
He is described as having a distinctive tattoo of the word “bobbie” on his stomach.
He was believed to have been driving a silver or grey-coloured Ford S-Max people carrier, with false registration plates.
Det Ch Insp Katherine Goodwin urged the public to come forward and report any unfamiliar parked cars matching its description.
She warned people not to approach the suspect and to call 999.
“Our investigation into these appalling crimes is making good process but we urgently need the help of the public to identify and trace this man.
“It is vitally important we catch this man, and while stranger attacks of this nature are thankfully rare, we would urge people to remain vigilant.”
Climate activists gathered to mark the end of protests that caused 11 days of disruption across London.
More than 1,100 people have been arrested since campaigners from Extinction Rebellion first blocked traffic in the capital on 15 April.
On the final day of action, protesters blocked roads, climbed on a train and glued themselves together in London’s financial district.
Hundreds of people met in Hyde Park for a “closing ceremony”.
Campaigners sat on the grass next to Speaker’s Corner – widely considered London’s home of free speech – singing and listening to musicians.
Transport for London said all roads are open around Marble Arch.
Skeena Rathor, of Extinction Rebellion, welcomed the “rebels” to the ceremony and described the crowd as “beautiful beings”, adding: “This is our pause ceremony.
“Welcome to the beginning of our pause.”
She invited the crowd to “begin a process of reflection”, adding: “Thank you for what you have done this week. It is enormous. It is beyond words.”
The crowd cheered and clapped when a speaker said “the police were amazing” during the days of blockades.
“We will leave the physical locations but a space for truth-telling has been opened up in the world,” event organisers said on their Facebook page.
“We would like to thank Londoners for opening their hearts and demonstrating their willingness to act on that truth.
“We know we have disrupted your lives. We do not do this lightly. We only do this because this is an emergency.”
Extinction Rebellion is urging the government to “tell the truth” about the scale of the climate crisis. It wants the UK to reduce carbon emissions to net zero by 2025 and a Citizens’ Assembly set up to oversee the changes needed to achieve this.
On Thursday, 26 people were arrested on suspicion of aggravated trespass outside the Stock Exchange and on Fleet Street, bringing the total number of arrests up to 1,130 since the protests began on 15 April, the Met Police said.
Four people stood on top of a Docklands Light Railway (DLR) train while another glued herself to a train.
Five people were arrested on suspicion of obstructing the railway, the British Transport Police said.
Meanwhile, Dame Emma Thompson, who joined the activists on Saturday, has defended flying from Los Angeles to London to take part.
The actress said it was “very difficult to do my job without occasionally flying” but she was “in the very fortunate position of being able to offset my carbon footprint”.
More than 10,000 police officers have been deployed during the action.
Mayor of London Sadiq Khan said the protests had been a “huge challenge for our over-stretched and under-resourced Metropolitan Police”.
The Met said on Wednesday it had imposed new conditions under the Public Order Act on the protest area in Marble Arch, making it a criminal offence to protest outside a designated area or incite others to protest outside of it.
The conditions will remain in force until Saturday.
Extinction Rebellion activists have marched on Parliament to invite MPs to discuss climate change policies.
More than 1,000 people have been arrested since the protests began in central London a week ago.
Police said a “robust” plan was in place and protesters must leave Parliament Square by midnight.
A total of 71 people have so far been charged in connection with the protest. Makeshift camps at Oxford Circus and Waterloo Bridge have now been cleared.
Protesters left Marble Arch, which had been occupied since 15 April, carrying flags and banners and marching to drums shortly after 10:00 BST.
Demonstrators have previously suggested temporarily ending disruptive tactics to focus on political negotiations, as the campaign entered a second week.
Jay Monk, 49, who is taking part in the march, said it was a signal of a “renewed push” to have politicians answer the group’s demands.
Campaigners have three core demands: for the government to “tell the truth about climate change”; to reduce carbon emissions to zero by 2025; and to create a citizens’ assembly to oversee progress.
Earlier on Tuesday, teenage environmental activist Greta Thunberg met with party leaders at the House of Commons, but not Prime Minister Theresa May, who was chairing a cabinet meeting.
Ms Thunberg told a packed room her future and those of her fellow children had been “sold so that a small number of people can make unimaginable amounts of money”.
The 16-year-old Nobel Peace Prize nominee added: “You don’t listen to the science because you are only interested in the answers that will allow you to carry on as if nothing has happened.”
The Met Police said anyone failing to comply with its condition to leave Parliament Square by 23:59 would be “committing an offence and will be liable to arrest”.
The oldest person to be charged over the protests is 74 years old, while the youngest is 19.
The vast majority of those charged will appear in court between 14 May and 31 May, police said.
Protester Steve Jones, 53, suggested some of the disruption might be relaxed if the group was granted “meaningful discussions” with the government.
On Monday, at least 100 protesters laid down under the blue whale skeleton at the Natural History Museum in a coordinated “die in”.
Most of the demonstrators finished their lie-down protest after about half an hour.