The outspoken Dame and Oscar winner for her royal role, has admitted she “loved” taking the Class A drug at parties.

The Prime Suspect actress also says in an interview she thinks it is fine for people to grow marijuana in their back garden.

The 63-year-old wants to legalise prostitution and revealed she was the victim of date-rape because she was too polite to say “no”.

The Hollywood actress, who dallied with drugs in her thirties, said: “I loved coke. I never did a lot, just a little bit at parties.

“But what ended it for me was when they caught Klaus Barbie, the Butcher of Lyon, in the early Eighties.

“He was hiding in South America and living off being a cocaine baron. I saw how my little sniff of cocaine at a party had an absolute direct route to this f****** horrible man in South America. And from that day I never touched cocaine again.