McDonald’s Allergens UK
If you have a food allergy or intolerance, eating out requires extra care — and McDonald’s is no exception. The good news is that McDonald’s UK publishes detailed allergen information for its entire menu. In this guide, I’ll show you exactly where to find it, how to use it, and what to do in the restaurant to stay safe. Important: always verify allergen information on McDonald’s official channels before ordering, as recipes and suppliers change.
Where to find McDonald’s UK allergen information
McDonald’s UK provides a full allergen guide on its official website, listing the 14 major allergens for every menu item. You can also ask in any restaurant — crew members have access to allergen information and can check specific items for you. The McDonald’s app also includes allergen details for menu items. I recommend checking the official allergen guide online before you visit, especially if your allergy is severe, so you can plan your order in advance.
The 14 allergens McDonald’s UK tracks
Under UK law, McDonald’s must provide information on 14 allergens: celery, cereals containing gluten, crustaceans, eggs, fish, lupin, milk, molluscs, mustard, peanuts, sesame, soybeans, sulphur dioxide, and tree nuts. The official allergen matrix shows which of these are present in each menu item — it’s the single most important document to check.
Common allergens in McDonald’s menu items
To give you a general sense of what to watch for (always confirm on official sources): most burgers contain gluten (bun), milk, and sesame. Chicken McNuggets contain gluten. Filet-O-Fish contains fish, gluten, and milk. Breakfast items with egg obviously contain egg. Fries are cooked in dedicated fryers in the UK, but always verify this hasn’t changed. Desserts like the McFlurry contain milk and may contain other allergens depending on the topping.
How to order safely with an allergy at McDonald’s
- Check the official allergen matrix online before you go
- Tell the crew about your allergy when ordering — don’t assume they’ll know
- Ask them to confirm ingredients and preparation for your specific items
- Be aware of cross-contact: McDonald’s kitchens handle many allergens, and shared equipment is used
- If your allergy is severe, consider whether the risk of cross-contact is acceptable for you
Gluten-free and dairy-free options
McDonald’s UK doesn’t currently offer certified gluten-free buns, but some people with milder sensitivities order burgers without the bun — always discuss this with the restaurant. For dairy concerns, note that milk appears in many items including buns and sauces. There is no substitute for checking the current official allergen information for your specific order. Our nutrition guide covers the health side of the menu.
Disclaimer: I’m not a medical professional and this page is for general information only. Allergen information changes — always check McDonald’s official allergen guide and speak to restaurant staff before ordering. For the full menu, see McDonald’s UK menu.
Allergen labelling in McDonald’s restaurants
Inside the restaurant, you’ll find allergen information on menu boards and in printed materials available on request. Self-service kiosks also display allergen details when you tap on a menu item — take a moment to check before adding things to your basket. If anything is unclear, ask a crew member; they’re trained to help with allergen queries and can check the latest information for you. Never feel awkward about asking — it’s a normal and expected part of their job.
Allergens and McDelivery orders
Ordering through Uber Eats, Just Eat, or Deliveroo adds a layer of complexity, since you’re not speaking to restaurant staff directly. Check the official allergen matrix on McDonald’s website before ordering, and use the order notes field to flag your allergy — though be aware the kitchen still handles many allergens. For severe allergies, ordering in person where you can speak to the crew directly is the safer option.
McDonald’s allergens FAQs
Does McDonald’s UK have an allergen menu?
Yes — the official website has a complete allergen matrix covering all 14 major allergens for every menu item. Ask in-store too.
Are McDonald’s fries gluten-free in the UK?
UK fries are made from potatoes, but recipes and preparation can change — always check the current official allergen information rather than relying on what you’ve heard.
Can I trust McDonald’s allergen information?
It’s the official source and the best available, but always tell staff about your allergy when ordering and be aware of cross-contact risks in the kitchen.
What should I do if I have an allergic reaction?
Seek medical help immediately. You can also report the incident to the restaurant and your local council’s environmental health team — see our complaints guide.