First holiday memory?
Hawaii, when I was really small. My parents are fond of going there, and when you have been 40 times, it starts to get a bit monotonous, but I have good memories of it when I was younger. I really like Maui, particularly the Four Seasons Hotel.
I had a really good time in Thailand last year. I went to Bangkok, Railey and Koh Phangan with friends. I travel a lot with work, so it was fun to do things like climbing and kick boxing.
Favourite place in the British Isles?
We have a house in Buckinghamshire, where I grew up, and I love it there because there's very little around.
What have you learnt from your travels?
Always smile and nod, no matter what anyone tells you.
Ideal travelling companion?
My friend Jamie, whom I've known since I was two. We travelled round the States this summer, which was a lot of fun. He doesn't take things too seriously, which is important.
Beach bum, culture vulture or adrenalin junkie?
I only ever go to places where there's somewhere to go climbing. I'm not into looking at cultural sites that get crowded by tourist groups - I like remote places that most people don't get to see.
Greatest travel luxury?
My iPod. It comes everywhere with me.
I read all sorts. At the moment, I'm reading the sequel to the film Willow, which is called Shadow Moon, by George Lucas. It's really good.
Where has seduced you?
Tokyo, in particular the Roppongi district, which is like Las Vegas, times 10. There's a bar on nearly every floor of every building. You can't not get up to mischief there. You go out for sushi at 7pm, and don't get home till seven the next day.
Better to travel or arrive?
I like travelling, even if it means hanging around in airports for five hours.
Worst travel experience?
I was on a plane leaving New York once and the cabin depressurised, which was quite scary. All the cans of drink and packets of crisps started exploding, and we had to make an emergency landing in Chicago.
India, it's a little too raw for my liking.
In Kollapur, India. I think the room I was staying in had toxic mould in it.
The Château du Sureau in Oakhurst, a one-horse town outside Yosemite in California. My parents stumbled on it. There are bungalows that come with a butler, and there's literally nothing else around, it's ridiculous.
Favourite walk/swim/ ride/drive?
I like Malibu for outdoor activities because there's a great beach and you can go climbing there.
Best meal abroad?
My most memorable meal abroad was at a restaurant called Cabbages & Condoms in Bangkok. It serves traditional Thai food but you get condoms instead of mints at the end of the meal - really weird!
First thing you do when you arrive somewhere new?
I have a shower, then go out and see what's within walking distance of where I'm staying. If there's a beach, I like to get straight into the water.
I'd really like to hire a van and drive around New Zealand for a couple of months.
Now that I'm spending more time in London, I'm really starting to appreciate it and like it a lot more. It's awesome in the summer.
I'm going to Namibia to hang out with elephants for 10 days because I'm making a wildlife documentary.
Jack Osbourne's book, '21 Years Gone: The Autobiography', is published by Macmillan, £16.99