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    Home » Recommendations

    7 UK Chains With The Most Unhealthy Menu Items

    Published:Aug 2, 2025· Modified: Jul 31, 2025 by Mia Davidson

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    Fast food might be convenient, but it often comes with a hefty health price tag. Many popular UK restaurant chains serve menu items loaded with calories, saturated fat, sodium, and sugar.

    These nutritional nightmares can contribute to obesity, heart disease, and other health problems when consumed regularly.

    1. Five Guys

    Five Guys
    © Delishably

    American import Five Guys has gained a cult following for its customisable burgers and mountains of fries. According to Daily Meal, their standard cheeseburger contains a whopping 73% more saturated fat than similar offerings at competitor chains.

    The restaurant's signature fries, cooked in peanut oil and served in generous portions, can easily add hundreds of extra calories to your meal. Their milkshakes further compound the nutritional damage.

    2. Popeyes

    Popeyes
    © Reddit

    Newly arrived to British shores, Popeyes has quickly made its mark with crispy fried chicken that's as calorie-dense as it is tasty. Their classic chicken sandwich packs a serious nutritional punch that would make any dietitian nervous.

    Health experts at Daily Meal have flagged Popeyes' menu for excessive saturated fat and sodium levels. Even their nuggets, which might seem like a safer option, contain concerning amounts of unhealthy ingredients.

    3. KFC

    KFC
    © Daily Mail

    The Colonel's secret recipe might taste delicious, but it's hiding some not-so-secret nutritional nightmares. KFC's Spicy Chicken Sandwich alone contains 620 calories, 33 grams of fat, and a staggering 2,140 milligrams of sodium.

    Research from Cozymeal shows that just one sandwich provides nearly a day's worth of sodium intake. Their famous fried chicken pieces aren't much better, with the breading soaking up unhealthy oils during the cooking process.

    4. Quiznos

    Quiznos
    © HuffPost

    Submarine sandwiches might seem like a healthier fast food option, but Quiznos proves this assumption wrong. Their Honey Mustard Chicken Sub contains an eye-watering 1,340 calories and 2,660 milligrams of sodium – more than an entire day's recommended intake!

    Cozymeal researchers found that Quiznos' combination of processed meats, cheeses, and sauce-heavy recipes creates nutritional disasters. Even their seemingly innocent bread contributes significantly to the calorie count.

    5. McDonald's

    McDonald's
    © Eat This Not That

    The golden arches might be iconic, but McDonald's nutrition facts are infamous among health professionals. Their Double Quarter Pounder with Cheese contains 740 calories and 42 grams of fat – and that's before adding fries and a drink!

    Cozymeal studies reveal that many McDonald's meals exceed recommended daily limits for saturated fat and sodium when consumed together. Even their breakfast menu items can start your day with an unhealthy nutritional profile.

    6. Dunkin'

    Dunkin'
    © Tasting Table

    Dunkin' might be known for coffee, but their food offerings should come with health warnings. A single glazed jelly stick donut contains 540 calories and 37 grams of sugar – more than many desserts!

    Liquid calories are even more concerning. According to Cozymeal research, a large frozen chocolate iced drink packs 890 calories and a whopping 158 grams of sugar. That's equivalent to approximately 40 teaspoons of sugar in one cup!

    7. Pizza Hut

    Pizza Hut
    © Pizza Hut

    Pizza Hut might be a family favourite, but their offerings are nutritional nightmares. A single large specialty pizza can exceed 2,000 calories – an entire day's recommended intake for many adults!

    Cozymeal studies show that Pizza Hut's combination of refined carbohydrates, processed meats, and multiple cheese blends creates fat and sodium bombs. Their popular sides like stuffed crust and breadsticks further inflate the unhealthy meal totals.

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