Harry Potter actress Emma Watson has made a GBP1 million ($A2.0 million) donation to a new fund that will help set up a framework and provide support for those affected by sexual harassment.
Tom Hiddleston and Keira Knightley are among the names listed on the official Go Fund Me page as having each donated GBP10,000.
Other donations visible are GBP500 from Emma Thompson, and GBP1000 each from Gugu Mbatha-Raw, Doctor Who star Jodie Whittaker and Noomi Rapace.
The donations follow the publication of an open letter backed by more than 200 leading female stars in the entertainment industry.
The letter, one of two published in The Observer newspaper ahead of Sunday night's Bafta awards, demands the eradication of sexual harassment from across all industries.
Double Oscar-winner Thompson and Bond star Naomie Harris are among signatories on the open letter standing shoulder-to-shoulder with the Time's Up movement in calling for an end to harassment, abuse, and impunity in a world "ripe for change".
The stars of film, TV and stage have also joined forces with more than 160 activists, academics and service providers, to launch the Justice and Equality Fund which will aim to resource a network of support and advocacy organisation projects across the UK.
The Bafta film awards will see Britain's biggest stars joined by activists on the red carpet, while many attendees will wear black in solidarity with Time's Up, the movement launched following the sexual harassment scandal that engulfed Hollywood after an avalanche of allegations were made against film producer Harvey Weinstein.
The open letter from women in entertainment states: "This movement is bigger than just a change in our industry alone.
"This movement is intersectional, with conversations across race, class, community, ability and work environment, to talk about the imbalance of power."
The letter highlights the gender pay gap, the insecurities of the gig economy and freelance work as well as research which found more than half of women in the UK have experienced sexual harassment at work.
It says high-profile stars "need to use our power as communicators and connectors to shift the way society sees and treats us".
"We need to examine the kind of womanhood our industry promotes and sells to the world."
They call for "collective power" in bringing the Time's Up movement to workers across all industries "in the limelight or the shadows" to galvanise others and invite supporters to donate to their new fund.
Gemma Arterton, Andrea Riseborough, Gemma Chan, and Tessa Thompson are among the stars who will be accompanied at the Baftas by activist guests in a move mirroring the Golden Globes last month.
A second letter signed by more than 160 activists, academics and service providers welcomes the involvement of the stars.
