I have a schedule that is absolutely relentless. With regards to my routine, there isn't one and it drives me insane. When I'm filming Supernanny in the US, I may have a make-up call at 3am. Because of work regulations nobody breaks for the first six hours so I might not be able to grab anything until 9am, but I always aim to have breakfast. Breakfast is the most important meal for me. I love porridge, which I have with water, and some fruit, usually raspberries or melon. And I drink hot water with lemon and green tea. I'm really into green tea at the moment.

What I eat when I'm filming all depends on where I am. When I was in Alaska I thought I just cannot have another meal of reindeer and elk so I ended up eating fast food which really did not agree with me. My weight fluctuates because of the irregular way that I eat when I'm on the road. Now I've started working in the States I'm more conscious about the food that I'm eating because a lot of the celebrities there are so thin.

In the UK, I'm lucky if a PA has time to grab me a sandwich and a drink. I tend to have a wholewheat pitta with tuna mayonnaise or a bap stuffed with Greek salad. I've started to eat carbs at lunchtime instead of in the evenings. If you're doing a long day then carbs keep you going. I ask for fruit in the car. I like having a bag of satsumas to be able to snack on. In the US I can request things like a salmon or Caesar salad. I really like fish, especially swordfish.

I live with my father so on the rare occasions when I'm back home, we'll make plans to eat together. He loves my home-made curries. Spending time with my family and friends is usually over a meal. I adore Mexican food and there's a great place called La Perla in Covent Garden. Or I'll have people over and cook. I love wine, especially Sancerre.

I live in West London so when it comes to food shopping, I'm really lucky as there's a good butcher and a fishmonger. I like to buy from lots of different shops. In my fridge there'll always be a salad to tuck into and some bottles of sparkling water. I love drinking that with a slice of lime or lemon. If I have something sweet, it will probably be chocolate. I do like Toblerone. My weakness is white bread, an uncut bloomer, but I'm very balanced with what I eat. Food is not a treat, it's fuel.

As Supernanny, I constantly see kids trying to control parents through food, over-eating or not eating enough. It wasn't that way when I was growing up. My mother had a Spanish upbringing. She was an excellent cook. Everything was home-made. We didn't eat food with smiley faces on it. My Mum passed away in 1994. I miss her. I miss her cooking. It would be nice to have a meal with her again.

Salmon salad

Unlike tuna, salmon is rich in health-giving omega-3 fats and does not tend to be contaminated with mercury. Accompanied by some salad, this represents a very healthy lunch option.

Green tea

Tea is rich in antioxidant polyphenols. And studies link the drinking of green tea with a reduced risk of cancer, including breast cancer. A very healthy cuppa indeed.

Porridge

Oats give a sustained release of sugar into the bloodstream and are generally well tolerated, unlike wheat. Jo could make the porridge even better from a nutritional perspective by adding some ground nuts.

Tuna mayonnaise in pitta bread

Not ideal as tuna is low in omega-3 and may contain mercury; mayonnaise may contain hydrogenated and trans fats and the bread is wheat-based (see porridge).

Melon and raspberries

Full marks to Jo on the fruit front. Raspberries get a big tick for being especially nutritious. They're rich in ellagic acid, which appears to have cancer-protective properties.

Sparkling water

There's some evidence that sparkling water can reduce risk of heart disease in women. But it can also cause 'dental erosion' so it's best drunk through a straw.

Toblerone

I love Jo's no-nonsense approach to food, especially with regard to kids. This food is too rich in sugar, however, I think Jo does a decent job of eating healthily in quite difficult circumstances.