Mary McCartney didn't know her mother was going to die.

The 45-year-old daughter of Paul and Linda Mccartney - who died of cancer in April 1998 aged 56 - knew her mum had been diagnosed with breast cancer but wasn't prepared for her to pass away quite so suddenly.

She said: ''I didn't know my mother was going to die.

''When I took those last pictures of her I did them because she was doing a cookbook and we were like, 'Let's do pictures!'

''Fortunately for her she went through her treatment for a couple of years and, yes, it was aggressive treatment, but she was quite lucky in that she looked quite well.

''She managed to go horse riding and be up and about until two days before she passed away. And then she just went quickly. But before that, we weren't living with, 'We know you've got six months to live' or anything like that.''

Mary, who works as a portrait photographer, admits she used to dislike talking about her late mother's condition but over the years she has grown to ''acknowledge'' talking about it.

She added to The Times newspaper: ''I didn't want to acknowledge it in case it made something bad happen, but actually now I'm quite upfront about it.

''I'm more, 'It's rubbish but we might as well talk about it.' ''