In pictures: Greta's speech and marchpublished at 12:29 Greenwich Mean Time 28 February 2020
Image source, PA Media
Image source, PA Media
Image source, PA Media
Image source, PA MediaIn pictures: Greta's speech and marchpublished at 12:29 Greenwich Mean Time 28 February 2020
Image source, PA MediaImage source, PA MediaImage source, PA MediaImage source, PA MediaWarning for anybody walking or biking around Bristol city centre to avoid the areapublished at 12:18 Greenwich Mean Time 28 February 2020
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End of X postMarch is now snaking through Bristol city centrepublished at 12:15 Greenwich Mean Time 28 February 2020
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End of X postMarch begins in Bristol - with Greta at the frontpublished at 12:11 Greenwich Mean Time 28 February 2020
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End of X postSignificant disruption expected as roads are closed across city centrepublished at 12:04 Greenwich Mean Time 28 February 2020
Image source, Bristol City CouncilImage caption, The council say road closures are planned to 'minimise risk of harm'
Bristol City Council and Avon and Somerset Police have published a list of roads that will be closed.
They say they "are working together to manage public safety and minimise disruption".
"As part of plans to minimise risk of harm to road users, pedestrians and protesters some city centre road closures will be in place from 9am until 5pm," the council adds.
The area covered by road closures will stretch from Broadmead and the Bearpit across to Hotwells, Brandon Hill and Park Street.
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End of X postPhoto looking across College Green as Greta speaks to the crowdpublished at 11:57 Greenwich Mean Time 28 February 2020
'I am telling you to act'published at 11:56 Greenwich Mean Time 28 February 2020
Jennifer Meierhans
BBC News OnlineGreta Thunberg took to the stage saying: "I am so happy to be here in Bristol with all of you."
"This is an emergency. People are already suffering and dying from the consequences of the climate and an environmental emergency. But it will get worse and still this emergency is being completely ignored by the politicians, the media and those in power," she said.
"World leaders are behaving like children so it falls on us to be the adults in the room," she said.
"Just look at Bristol as an example. The other week the plans to expand Bristol airport were cancelled - a lot thanks to climate activists," she said.
"And of course this is far from enough, but it shows that it does actually make a difference. Activism works so I'm telling you to act.
Hugh Fearnley-Whittingstall joins Bristol crowdspublished at 11:51 Greenwich Mean Time 28 February 2020
The celebrity chef is one of thousands joining the climate strike today
Polly March
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End of X postGreta Thunberg takes to the stage at College Greenpublished at 11:46 Greenwich Mean Time 28 February 2020
The Swedish environmentalist will also join the march through Bristol
Sorry, we're having trouble displaying this content.View original content on FacebookThe BBC is not responsible for the content of external sites. Facebook content may contain adverts.Climate strike live on BBC News Channelpublished at 11:37 Greenwich Mean Time 28 February 2020
Jennifer Meierhans
BBC News OnlineThe BBC's environment correspondent Claire Marshall is bringing updates live on the BBC News Channel.
She said it's a festival atmosphere complete with mud, wellies and chanting.
There have so far been no safety or securities issues, she said.
Stay tuned for updates here.
Greta arrived in an electric carpublished at 11:31 Greenwich Mean Time 28 February 2020
Social media users have been asking about Greta's carbon footprint.
She arrived by train and was driven to the climate strike in a red Nissan Leaf electric car.
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End of X postMya-Rose Craig - aka Birdgirl - has taken to the stagepublished at 11:28 Greenwich Mean Time 28 February 2020
Watch her speech live here via Facebook
Sorry, we're having trouble displaying this content.View original content on FacebookThe BBC is not responsible for the content of external sites. Facebook content may contain adverts.Speeches begin on College Green ahead of Greta's appearancepublished at 11:21 Greenwich Mean Time 28 February 2020
The organisers have started talking on stage ahead of Greta speaking to the crowd.
View across College Green from the top of City Hallpublished at 11:11 Greenwich Mean Time 28 February 2020
This photo is from Bristol mayor Marvin Rees.
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End of X postWe are live at the Bristol Youth Strike 4 Climate protestpublished at 11:05 Greenwich Mean Time 28 February 2020
Watch the latest here from College Green...
Sorry, we're having trouble displaying this content.View original content on FacebookThe BBC is not responsible for the content of external sites. Facebook content may contain adverts.'Gridlocking Bristol to a standstill'published at 11:02 Greenwich Mean Time 28 February 2020
Brian Purnell tweeted BBC Radio Bristol to express his frustration at the traffic disruption.
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End of X postWho is Greta Thunberg?published at 10:54 Greenwich Mean Time 28 February 2020
Image source, ReutersHow much do you know about Greta Thunberg?
She is the Swedish teenager who skipped school and inspired an international movement to fight climate change, and has inspired millions of students to join protests around the world.
Her mother once took part in the Eurovision Song Contest.
But what made Greta start taking an interest in environmental matters and what has she achieved so far? Find out more in our profile piece.
Protesters travel from far and wide for climate strikepublished at 10:46 Greenwich Mean Time 28 February 2020
Bethan Evans
News editor, BBC West
Image caption, Sophie, 16, and her dad travelled from Inverness by train to be here today.
Protesters taking part in today's climate strike have travelled from as far as Inverness.
Campaigners are coming to Bristol from across the West and beyond, to show their strength of feeling on environmental issues.
It is not clear how many people will attend the strike but police say it has grown "so large" usual safety measures may not be adequate.
Greta Thunberg will be at Bristol Youth Strike 4 Climate (BYS4C) event on College Green, before joining the march through the city.
Image caption, Leonara and Penny Mathias have travelled up from Devon.
Muddy scenes as people begin to arrive at College Greenpublished at 10:26 Greenwich Mean Time 28 February 2020
BBC Radio Bristol's politics reporter Pete Simson has recorded a video showing the scene.
If you're going to the event, note the mud and rain. You might need wellies.
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End of X postGreta Thunberg has arrived in Bristolpublished at 10:17 Greenwich Mean Time 28 February 2020
BreakingGreta Thunberg has arrived in Bristol - at railway station Temple Meads - a few moments ago.
