Director Edgar Wright is one of many stars sporting a prominent Time's Up badge.
His support of the movement is particularly poignant, having directed Baby Driver - the last major film to star Kevin Spacey, who has faced a string of sexual harassment allegations in recent months.
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Sir Patrick Stewart is also wearing a black tie as a nod to the movement - and wearing the same badge.
PACopyright: PA
The best film contenders
20th Century FoxCopyright: 20th Century Fox
Three Billboards Outside Ebbing, Missouri is favourite to win the night's top prize - best film. And despite being set in the US (the clue's in the title), it's classed as British and is also hotly tipped to win best British film. But it's quite an open field this year.
Best film
Call Me By Your Name
Darkest Hour
Dunkirk
The Shape Of Water
Three Billboards Outside Ebbing, Missouri
Curiously, Christopher Nolan's war epic Dunkirk is up for best film - but not best British film.
Three Billboards star Sam Rockwell is here - he's nominated tonight for best supporting actor for his role in Three Billboards Outside Ebbing, Missouri.
(He faces competition from his own co-star Woody Harrelson.)
Discussing the film's success, Rockwell said:
Quote Message: We felt like we made a good movie, but we didn't know if anybody would see it. I guess it just hit the right nerve, I'm really proud of it. And it's the third time I worked with [writer-director] Martin McDonagh - he's awesome.
We felt like we made a good movie, but we didn't know if anybody would see it. I guess it just hit the right nerve, I'm really proud of it. And it's the third time I worked with [writer-director] Martin McDonagh - he's awesome.
Gary Oldman is the clear frontrunner to win best actor for his stirring, prosthetic-aided performance as Winston Churchill in Darkest Hour. But don't be surprised if Daniel Day-Lewis gets the nod for Phantom Thread - which he's said is his last film. If he does win, it would be his fifth Bafta for best leading actor.
Leading actor
Daniel Day-Lewis - Phantom Thread
Daniel Kaluuya - Get Out
Gary Oldman - Darkest Hour
Jamie Bell - Film Stars Don't Die In Liverpool
Timothee Chalamet - Call Me By Your Name
In the leading actress race, Frances McDormand is favourite - but Britain's own Sally Hawkins or Lady Bird's Saoirse Ronan could scoop it.
Leading actress
Annette Bening - Film Stars Don't Die In Liverpool
Frances McDormand - Three Billboards Outside Ebbing, Missouri
Dame Kristin Scot Thomas, who's nominated for best supporting actress for Darkest Hour, is one of the many stars wearing black and wearing a Time's Up badge.
She told BBC News about why she's backing the campaign:
Quote Message: I’m very pleased to support it. I’m very pleased to be involved in being able to say out loud, it’s enough. I’m fed up with not being paid the same. I’m fed up with not being treated the same. I’m fed up with it being assumed that I will do this, that and the other – that some people would never ask a man to do.
I’m very pleased to support it. I’m very pleased to be involved in being able to say out loud, it’s enough. I’m fed up with not being paid the same. I’m fed up with not being treated the same. I’m fed up with it being assumed that I will do this, that and the other – that some people would never ask a man to do.
Quote Message: And I’m convinced, I know, that it’s certainly not uniquely in this industry. It just so happens that in this industry we all have this wonderful platform and we’re all able to talk about it and get the word out.
And I’m convinced, I know, that it’s certainly not uniquely in this industry. It just so happens that in this industry we all have this wonderful platform and we’re all able to talk about it and get the word out.
Cirque Du Soleil take to the red carpet
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The cast of Cirque Du Soleil are among the first to arrive on the red carpet.
The company's show OVO is currently playing at the Royal Albert Hall, which you might think would mean the cast would be taking advantage of their night off by sitting at home in their slippers with a takeaway.
But no, they're out in force tonight to support the Baftas.
The vast majority of stars arriving at the Royal Albert Hall are wearing black - a mark of protest at the recent Hollywood sexual harassment scandal.
Many of them are also wearing Time's Up pins to represent the movement.
Edith Bowman and Rochelle Humes were among the early arrivals.
PACopyright: PA
PACopyright: PA
What to expect
Getty ImagesCopyright: Getty Images
This is shaping up to be an eventful night - there will be as much attention on the red carpet fashion statements and the speeches as the award winners.
There's also a new host this year, with Joanna Lumley filling Stephen Fry's sizeable shoes.
Welcome to our live coverage of this year's Bafta Awards - the biggest night in British film.
The guests are starting to arrive at the Royal Albert Hall ahead of the ceremony, which starts at 19:00 GMT.
We'll bring you LIVE coverage of the red carpet action and the winners - which means you'll see it here before you see it on TV in the UK. The ceremony will be broadcast on a delay, starting on BBC One at 21:00.
Live Reporting
Steven McIntosh, Annabel Rackham and Ian Youngs
All times stated are UK
Get involved
Male stars support Time's Up
Director Edgar Wright is one of many stars sporting a prominent Time's Up badge.
His support of the movement is particularly poignant, having directed Baby Driver - the last major film to star Kevin Spacey, who has faced a string of sexual harassment allegations in recent months.
Sir Patrick Stewart is also wearing a black tie as a nod to the movement - and wearing the same badge.
The best film contenders
Three Billboards Outside Ebbing, Missouri is favourite to win the night's top prize - best film. And despite being set in the US (the clue's in the title), it's classed as British and is also hotly tipped to win best British film. But it's quite an open field this year.
Best film
Curiously, Christopher Nolan's war epic Dunkirk is up for best film - but not best British film.
Outstanding British film
See the full list of nominees.
Black Panther star sparkles
Sam Rockwell rocks the red carpet
Three Billboards star Sam Rockwell is here - he's nominated tonight for best supporting actor for his role in Three Billboards Outside Ebbing, Missouri.
(He faces competition from his own co-star Woody Harrelson.)
Discussing the film's success, Rockwell said:
Bafta here we come
Journey's End star Sam Claflin:
Baby Driver director Edgar Wright:
The badge many Bafta guests are wearing
Who might win a leading acting award?
Gary Oldman is the clear frontrunner to win best actor for his stirring, prosthetic-aided performance as Winston Churchill in Darkest Hour. But don't be surprised if Daniel Day-Lewis gets the nod for Phantom Thread - which he's said is his last film. If he does win, it would be his fifth Bafta for best leading actor.
Leading actor
In the leading actress race, Frances McDormand is favourite - but Britain's own Sally Hawkins or Lady Bird's Saoirse Ronan could scoop it.
Leading actress
See the full list of nominees.
Kristin Scott Thomas says Time's Up
Dame Kristin Scot Thomas, who's nominated for best supporting actress for Darkest Hour, is one of the many stars wearing black and wearing a Time's Up badge.
She told BBC News about why she's backing the campaign:
Cirque Du Soleil take to the red carpet
The cast of Cirque Du Soleil are among the first to arrive on the red carpet.
The company's show OVO is currently playing at the Royal Albert Hall, which you might think would mean the cast would be taking advantage of their night off by sitting at home in their slippers with a takeaway.
But no, they're out in force tonight to support the Baftas.
Stars wear black in support of #MeToo
The vast majority of stars arriving at the Royal Albert Hall are wearing black - a mark of protest at the recent Hollywood sexual harassment scandal.
Many of them are also wearing Time's Up pins to represent the movement.
Edith Bowman and Rochelle Humes were among the early arrivals.
What to expect
This is shaping up to be an eventful night - there will be as much attention on the red carpet fashion statements and the speeches as the award winners.
There's also a new host this year, with Joanna Lumley filling Stephen Fry's sizeable shoes.
Read more about what to look out for at this year's ceremony.
Get involved
Let us know what you think of the nominees and winners, and who you are rooting for.
Email us on entertainment.news@bbc.co.uk or tweet @BBCNewsEnts.
Let the 2018 Baftas begin
Welcome to our live coverage of this year's Bafta Awards - the biggest night in British film.
The guests are starting to arrive at the Royal Albert Hall ahead of the ceremony, which starts at 19:00 GMT.
We'll bring you LIVE coverage of the red carpet action and the winners - which means you'll see it here before you see it on TV in the UK. The ceremony will be broadcast on a delay, starting on BBC One at 21:00.