The actress and reality TV star admitted that she has not forgiven McCririck for his behaviour when they appeared on Celebrity Big Brother together in 2005.
"He is disgusting. Revolting. It's not an act. The man is foul," Brigitte told the Daily Star. "He's always picking his nose, so he turned up on the programme with great big scabby cold sores under each nostril. He kept dabbing at them with a filthy cloth. Yuck!
"I met his wife afterwards, poor little thing. He calls her 'The Booby'. I pity any woman stuck with that nauseating creature."
Nielsen also confirmed that she is grateful to Big Brother bosses for introducing her former mother-in-law Jackie Stallone to the house.
She revealed: "At first I thought: 'F*** Big Brother, they're playing major mind games with me'. Then I decided to make the best of it. Jackie and I hadn't spoken a word to each other for 17 years. We made up on the show, became friends and have stayed in touch ever since."