THE opera singer Fiona O’Neill was eight weeks pregnant when she was driving on the M1 at 70 miles an hour and was hit by a Portuguese lorry. She was lifted into the air in her car, which then spun around before hurtling across the motorway, hitting a concrete block and landing 200 yards up an embankment.

This happened on 5 May when Fiona – who has sung at private parties for John Major and the Prince of Wales and became a household name when she stripped naked for the television film of the musical Vampyr – was on her way to perform as Madame Butterfly.

The lorry driver, in a left-hand drive, had moved lane without seeing her. ‘It was horrendous,’ recalls Fiona. ‘I remember being hit then flying like an aeroplane up an embankment, spinning and floating for what seemed like hours … I kept thinking, ‘You must keep calm because of the baby and how are they going to find someone to sing tonight?”

When Fiona landed, she noted a police car driving past in the other direction. ‘I was told later that I was so far off the M1 that the police thought I was working for the council.’ The bottom of her Vauxhall Cavalier had been ripped off.

The ambulance arrived rapidly, after she’d started having a severe asthma attack. ‘The ambulance man was trying to put an oxygen mask on me while a policeman was trying to breath-test me. The ambulance man told him, ‘You must be joking.” She was taken to Northampton General Hospital where she received treatment for a broken rib, whiplash and terrible shock. Astonishingly, she didn’t lose her baby. (Though even today she suffers migraines, sleeps too much and shakes when driving.) The next night, she performed. ‘I don’t know how I did it. My husband drove me there and I just did it. I knew I had to get going again.’ A week later, she received a bill for £20.65 for the ambulance journey – ‘I never knew you had to pay for emergency services’ – and £123.38 from the company that towed away her car.

Fiona, 35, speaks tremulously with a slight northern accent, has big green eyes, cascading hair and wears a Monsoon shirt and jodhpurs. She has sung with the English National Opera, Scottish Opera, d’Oyle Carte, been an operagram and done promotion work. ‘The whole of Opera North came through Heathrow’s Terminal Two when I was there in a maid’s uniform saying, ‘If you buy two items of duty free …” Last summer she sang at a private party in Hampshire for Prince Charles, when she was suffering from bronchial asthma. Afterwards she met the prince. ‘Oh, you were the one who sang those very high notes,’ he remarked.

FIONA hit the headlines first in 1992 when she starred in Vampyr and took her clothes off with tenor Philip Salmon for a duet in a pool. (‘A trill a minute. Watch her warble. Madame Gutterfly,’ said the tabloids.) She felt uncomfortable about the nude scenes. ‘The only way I managed was by pretending my head was the only bit that belonged to me. You just don’t look down. There are always bits of you you don’t want to see, like your thighs.’ It was particularly difficult for her because she’s an ex-convent schoolgirl, imbued with inhibitions. ‘Their idea of sex education was to say, ‘Don’t bath when you have a period,’ and, ‘You must never look at yourself in the mirror.” She is very unpromiscuous, a loner, and didn’t lose her virginity until she was 23. ‘Maybe I’m frightened of relationships. But I think I’m a closet romantic, into soppy novels and stuff.’ Before transmission, she became excruciatingly embarrassed. ‘Suddenly you realise your neighbours and the man in the pub are going to see you with no clothes on.’ She watched herself. ‘A bit like going to your own first night.’ Afterwards, she received only a few lewd comments and her mother rang. ‘She said, ‘I told you, you’ve not been eating enough.” Fiona married this year, on 29 April, a year after first setting eyes on her husband, set designer Roger Kiff. ‘I met Roger on a train, the 6.19 from London Bridge to New Cross Gate. He was sitting reading The Guardian. I thought he looked nice, wearing black.’ British Rail kept making them change platform to get back on the same train. ‘He started an ‘Oh, bloody British Rail’ sort of conversation.’

When they arrived, they stood talking for 20 minutes. By coincidence, he was building a set for the National Theatre and Fiona was working there in Baby Doll. And he lived round the corner from her. ‘A week later we went out, two weeks later he moved in with me, and a month later he proposed.’ They gave themselves time to be sure of their feelings. Then they married in Lewisham register office. ‘I wanted it to be just us and the dog, and we got permission for the dog. Then our parents seemed miserable. So we invited close family.’

When she was 18, Fiona became anorexic. How did she get through it? ‘By doing nothing about it. Everybody pretended it wasn’t happening.’ Then she started to eat continuously. ‘I put on masses of weight and went up to size 16. We just pretended it was normal.’ Still she’s conscious of her weight. ‘In the mirror I always see myself as big.’ Nowadays her compulsiveness manifests itself differently. ‘I’m a workaholic.’