Noel [Charles, husband] and I love cooking. He does his cooking and I do mine. I'm the traditional English cook, with a twist now and then. Because I was married to an Italian, I'm also pretty good at Italian food. Noel, he can cook anything, so can Julian.

John's relationship with each of the other Beatles was different. He was at his most relaxed with Ringo, who often had him in stitches with his jokes.

The first thing Julian wanted to do in life, well, before he wanted to be an artist and then a musician, was to be a chef. He'd come home and say 'Why don't you bake cakes like my friends' mothers?' I'd say, 'Oh, Julian, go out and buy a Mary Baker cake mix and do it yourself!' That started him off! By the time he was 13, he'd disappear into the kitchen whenever we had visitors and emerge with beautiful canapes. Now he thinks nothing of cooking for ten or 15 people, and he does it so calmly.

I knew the man up until our divorce - after that I didn't know the man, but it didn't stop me caring about him and worrying because of the complete change that I saw in him. He'd lost his sense of humour and he got aggressive; he wasn't for the world any more, he was just for Yoko. Before that he opened his arms and embraced the world with his wit and humour - afterwards he was a completely different kind of person.

I was proud, excited and a little frightened. It was all taking off so quickly…the more successful the boys were, the further away from me John felt. I was getting used to being a mum, but most of the time I felt like a single parent…it was hard not to feel frustrated with being stuck at home. I loved Julian, but I knew that if I hadn’t had him I could have seen much more of John and that was hard…I felt shut off from the life he was living. After years at his side, I was excluded, just as it was all happening.

John asked me to dance and I nearly died. Bingo! I then amazed myself by being very cool, calm and collected outwardly-inside I was out of this world. The dance was slow and smoochy. I was aloof and John, I think, was slightly embarrassed. It was all very painful and beautiful at the same time. The remaining students were looking on with puzzled expressions at such an unlikely combination.

John and I weren't capable of getting back to Kenwood from there, so the four of us sat up for the rest of the night as the walls moved, the plants talked, other people looked like ghouls and time stood still. It was horrific: I hated the lack of control and not knowing what was going on or what would happen next.