Much to my embarrassment — but also secret delight — it was thanks to my mother that I dated a Beatle at 17.
The occasion was a big charity night for the Red Cross and I had been invited — with my parents, of course — to go down to the house of actor Richard Todd (of The Dam Busters fame) in Henley, Oxfordshire, where he was hosting a reception party.
It was one of those old-fashioned charity events where film stars and celebrities turn up to attend a premiere or a first night and raise money for a good cause.
On this occasion my mother decided that her daughter needed an escort — and that my escort should be George Harrison.
I nearly choked on my tea when she said she'd fix it. 'What?! Are you serious?' I gasped. 'You can't just call George Harrison up out of the blue and say: "Hey, George, do you wanna take my daughter out!"'
My mother marched to her desk and picked up the phone. The reason George was on her mind was because we'd met him a few days before at a charity event.
To my acute embarrassment, she'd asked for his phone number — and he'd actually given it to her.
Beatles star George Harrison with actress Hayley Mills at premiere of Charade film at the Regal theatre in March 1964
Now my mother seemed to be dialling in slow motion. I could see she was clearly speaking to someone; then, before I could gauge what was happening, the receiver was put down again and my mother looked up at me with a wry smile.
The die was cast — George Harrison was going to come to our house in Richmond on Friday evening to drive me to Henley.
I was in shock. In fact, the whole house was. The anticipation leading up to that night was unbearable: Christmases, birthdays, weddings — they don't even come close. It was 1964, and I was going on a date with George Harrison!
Here's what I wrote in my private journal: 'As soon as I walked down the stairs and saw him standing there in the hall with his black corduroy coat and hands thrust deep into the pockets and all that shining hair, my carefully cultivated calm vanished, my knees started to tremble.
'George and I tore off together in his black E-Type Jaguar. The rain was pouring down and, when my heart had finally settled more or less into its proper place, I looked at him out of the corner of my eye. He didn't seem to mind that I'd been foisted on him by my very determined mother.
'He reminded me of a little foal peering out from under a bear skin rug. His smile is rather wicked but in the most innocent sort of way; when he laughs it's as if there's a tiny leprechaun sitting on his shoulder who pulls one side of his mouth up.
'After a while we were driven in a black limousine to the cinema. There was a huge crowd of fans waiting there. When he saw them, poor George went slightly green and cowed-looking' (Pictured: Fans during a concert at Wembley in 1964)
'It was wonderful, just the two of us sitting there in the red leather warmth, zooming down the wet, black roads, staring past the three windscreen wipers fighting with a wall of rain.
'I wished we could just get lost and never have to go to the event, but keep on driving into the night.
'When we arrived at Richard Todd's house, I got nervous all over again. Inside, it was packed with large men, and women with sloping shoulders.
'As soon as they saw George, they all rushed at us and plied us with plates of food which neither of us wanted to eat.
'After a while we were driven in a black limousine to the cinema. There was a huge crowd of fans waiting there. When he saw them, poor George went slightly green and cowed-looking.
'In all the chaos, someone managed to open the door and he sprang into a snake-pit of shrieking, scratching, maniacal girls. One of them nearly took my eye out with a jabbing Biro pen . . .'
Somehow we managed to fight our way into the cinema, clinging to our clothes for fear they'd be torn off our backs.
'I've never witnessed anything like that, before or since. As a child star of popular Disney films, I was also a well-known face, yet I'd coped far less well than George with my own level of fame' (Pictured: Hayley Mills in a promotional shot for the film Pollyanna)
But as soon as we sat down, we were surrounded — people were leaning on our heads, their sharp elbows and grumbling stomachs in our faces.
George was marvellous, signing autographs and smiling at everybody, however pushy. One woman actually knelt in my lap to get at him!
The film we were due to see was Charade, with Cary Grant and Audrey Hepburn.
But we didn't get a chance to watch much of it, because people kept crawling on their hands and knees up the aisle, with autograph books in their teeth, to reach George.
We decided to try to sneak out before the end. But there was more screaming, fighting and stabbing pens. George jumped into the car and some fool slammed the door shut, leaving me stuck outside.
I saw his face looking back at me helplessly as the car sped off, girls still chasing and banging on the windows.
Poster of Hayley Mills in Pollyanna film
When I was 14, I was offered the starring role in the film Lolita. For the director Stanley Kubrick to make such a leap — from Pollyanna to Lolita — is somewhat mysterious, but I knew I could do it.
Like me, Lolita was teetering on the brink of womanhood; like me she was aware for the first time that men were noticing her.
And James Mason, who was going to play Humbert, the older man obsessed with her, was a friend of my parents, so I already knew and liked him.
I was allowed to read the script, and desperately wanted to do it. But my opinion wasn’t even sought.
Naturally, my parents weren’t thrilled with the idea; more importantly, neither was Walt Disney, who made it very clear that being a ‘Disney star’ meant being family-friendly.
So Lolita was politely turned down — and with it went my opportunity to work with one of the masters of 20th-century cinema. It was a bitter disappointment.
Advertisement
I've never witnessed anything like that, before or since. As a child star of popular Disney films, I was also a well-known face, yet I'd coped far less well than George with my own level of fame.
For a long time, I was barely aware of it. True, hundreds of fan letters started pouring in after my first Disney film, Pollyanna, was released when I was 14.
My mother made me reply to every one.
But if there was a buzz around my name, I had no inkling of it, incarcerated as I was in a Surrey boarding school.
As for holidays, they were spent on my parents' farm in Sussex. Hollywood was light years away.
Then two things happened. My second Disney film, The Parent Trap, was released in 1962, and became an instant smash hit.
More importantly for me, my boarding school — fed up with my irregular comings and goings — kicked me out at the age of 15.
This gave me an uncomfortable feeling of being dispensable. On top of that I was becoming increasingly disconnected from kids my own age.
As I needed something to do when I wasn't filming, my parents — actor John Mills and playwright Mary Hayley Bell — decided to send me to a Swiss finishing school.
Many years later, it would be the perfect answer for Princess Diana after she failed all her O-levels, but at least she'd taken them. The same could not be said of me.
What I desperately needed was a large dose of normality. I didn't get it: the girls at the finishing school were much older, so I made no friends and struggled with an ever-increasing sense of isolation.
Not only did I become rather introverted, I also became a complete hypochondriac, secretly convinced that the real reason my parents had sent me there was because I had lung cancer or TB.
Dogged by the fear I was dying, and unable to resist all the cheese fondues, fresh cakes and Swiss chocolate — I began piling on the pounds. By the time I turned 16, I'd blown up like a balloon.
Then suddenly it was over and I was on the train back to London, officially 'finished'. When I clambered down on to the platform at Waterloo, my parents walked straight past me, not recognising this fat girl with a face like a big bun.
As soon as I got home, I went on a diet. I had just one month to prepare for my role in the Disney film Summer Magic, and a lot to lose. And so began the long battle with my weight; going on one punishing diet after another, then succumbing to the unbearable temptation of the local bakery.
I hated my fat face, my voice and my spots, and I was terribly worried Walt Disney would be disappointed in me. My confidence collapsed; I simply didn't know who I was any more.
What I remember most about filming Summer Magic, with Burl Ives, was being
