Heather Mills pushed Paul McCartney into marrying her, according to a former friend.

Denise Hewitt, who claims to have worked as an escort along side Heather in the 1980s, told Channel 4 documentary Heather Mills: What Really Happened: “She said, ‘I’ll give him an ultimatum and if he doesn’t marry me within say eight months, ten months, I’m going to leave him’.”

Denise added that after the engagement, Heather was often less than complementary to Paul, saying things like: “Well look at me, I’m marrying an old man with bigger tits than me.”

Heather has repeatedly denied claims she worked as a call girl during her modelling days but Denise insists they worked together in “high class prostitution behind closed doors”: “[The clients] were big fish and there were a couple of others that were classed as Heather’s sugar daddies.”

“We used to get a lot of jewellery as gifts - rings, watches, Bulgari bracelets, cars. The world was our oyster. We enjoyed it.”

“Heather knows how to play people, she’s very clever, she’s got an X factor with men for some reason.”

“They just fall madly in love with her and I take my hat off to her because she manipulates people and they’re besotted, like enchanted, you know - like she throws fairy dust all over them.”

Heather Mills: What Really Happened is on Channel 4 at 10pm tonight.