LONDON (AP) — Many of Britain's most prominent female entertainment stars have signed an open letter demanding an end to sexual harassment ahead of Britain's major film awards.

A letter published Sunday has been signed by Academy Award winner Emma Thompson, Naomie Harris, Emma Watson, Gemma Arterton and many others.

The letter in The Observer calls for an end to impunity and says "this movement is bigger than just a change in our industry alone."

Backed by more than 190 entertainers, academics and activists, the letter aligns British film stars with the fight against sexual harassment set off by the allegations against U.S. movie producer Harvey Weinstein.

It comes ahead of Sunday night's British Academy Film Awards, where many women attending plan to wear monochromatic black in solidarity with victims of abuse.