Raphael says: "Dixie was amazing. Ninety-nine per cent of the stars in the film we got through her."
These included her actor boyfriend Tom Hollander, who plays a marketing executive cashing in on the sex toy's popularity, and Evening Standard writer Toby Young as a Labour MP who faces calls for the Rabbit to be banned.
Oscar-winning screenwriter Frederic Raphael - Stephen's father - also appears as a sleazy Hollywood producer.
Raphael Jnr said: "It's truly an independent film. Our production office was my parents' flat in Chelsea. Not receiving any money from the Government or the Lottery meant I had total control of the film. If you can do it this way, you don't want anyone else on board."