INGREDIENT RATING

NUTRITIONIST Angela Dowden analyses the ingredients and calories of the top five — and the worst . . .

TYRRELLS READY SALTED

CALS Per 100g: 491. The ingredients are just potatoes, sunflower oil and salt. There’s not much salt in these either — they have half the quantity of most brands. 8/10

WALKERS SALT AND VINEGAR

CAls pEr 100g: 519. Made with real sliced potatoes, so they are a source of fibre, and fried in oils that are lowish in cholesterolraising fats. A 25g bag has 7 per cent of your daily salt intake — not a disaster. 6/10

KETTLE SEA SALT & BALSAMIC VINEGAR

CAls pEr 100g: 513. Posh but not healthy! Nutritionally almost identical to cheaper brands. But being cooked in 100 per cent sunflower oil they are a source of vitamin E, helping protect cells from damage. 6/10

MCCOY’S READY SALTED

CAls pEr 100g: 533. Crinkles create a bigger surface area, which means that these crisps absorb more fat and end near the top of the calorie scale. A 25g multi-pack has just over a 20th of your daily salt recommendation. 5/10

QUAVERS

CAls pEr 100g: 536. Light starch-based Quavers are high in fat and calories on a weight basis. On the plus side, a multi-pack bag is only 16g, providing a diet-friendly 86 calories. 5/10

JACOB’S MINI CHEDDARS

CAls pEr 100g: 512. Made with 12 per cent powdered cheese, a 25g multi-pack has 128 calories. Baked with palm oil, so a small bag has 15 per cent of your daily recommendation of cholesterol-raising saturated fat. 1/10