Speaking for the first time, exclusively to The Mail on Sunday, Lisa, a former high-flying police officer, said: "It's true. We did make love on the plane that night. At first I denied it because I was so desperate to keep my job and I didn't want to hurt Ralph.

"I know some people will think it's disgusting. And I'm not proud of what I did - it was inappropriate behaviour. But I don't regret it. Ralph is gorgeous and the chemistry between us was amazing. What woman wouldn't want to make love with him? This sort of attraction happens to people all the time. It's just not usually with a Hollywood star at 35,000 feet.

Although Lisa makes no bones about having been an enthusiastic participant in the unedifying episode and is clearly still thrilled to have attracted the attention of an international film star, it is hard not to see her also as his victim.

Despite her tall, trim figure, there is sadness in her eyes, highlighted by the medication she takes for depression since she left a tough front-line job as a detective with an elite New South Wales police drugs squad.

One can't help asking whether Ralph Fiennes didn't spot a vulnerable woman, use her, and then abandon her to face the sack from her job with Qantas.