Thousands of people across the world camped out overnight on Saturday as part of a global effort to raise cash to tackle homelessness. Celebrities were among the hundreds taking part in the World's Big Sleep Out in London, Edinburgh and Cardiff.
Organizers were expecting more than 50,000 to take part globally, with other events in cities including New York, Brisbane and Dublin, reports BBC.
The initiative hopes to raise around $50m for homelessness charities.
In London's Trafalgar Square, those camping out faced temperatures of about 10°C and heavy rain - conditions which supporters said rough sleepers face every day.
Dame Louise Casey, a former head of the government rough sleepers' unit and trustee of the Big Sleep Out, told the BBC she hoped the event would be "symbolic."
"It seems absolutely bloody crackers right now - the rain is so heavy - but we're doing it because basically the world has a homelessness problem, it has a displaced people problem, it has refugees," Dame Louise said.
"All of these people are here tonight walking in the shoes of people who are homeless, or people who are refugees, we're just experiencing something for one minute, we're experiencing something that people have to experience all year round.
"It is a privilege to be here this evening - wet and cold as it is."
Meanwhile in Edinburgh, veteran actor Brian Cox spoke to crowds in West Princes Street Gardens and in New York, film star Will Smith delivered a speech.
In Cardiff, hundreds slept rough in the city's castle with Gavin and Stacey star Ruth Jones joining those taking part.
The World's Big Sleep Out campaign was created by Josh Littlejohn, the co-founder of the Scottish charity and sandwich shop Social Bite.