Leon UK Seed Oil Report Card
Based on our menu research, Leon UK cooks with: sunflower oil (GFC chicken nuggets); sunflower/rapeseed vegetable oil blend (baked fries coating); rapeseed oil in sauces, buns, and dressings. Across the 31 menu items we analyzed, it averages 4.6g estimated PUFA per item, earning a seed-oil grade of B (Medium Risk).
Safest Orders at Leon UK
Learn this once: a salad with grilled protein and the dressing left off is nearly always the lowest seed oil order anywhere. So the list below sticks to real meals, salads included, never just a water.
Cleanest full order: Grilled Halloumi Wrap + Still Water, 5.0g total
| Item | PUFA |
|---|---|
| Elderflower Presse | 0.0g |
| Porridge | 1.0g |
| Seasonal British Veg | 2.0g |
| Golden Glow Dhal | 3.0g |
| Rainbow Squash Salad | 3.0g |
What to Avoid at Leon UK
| Item | PUFA |
|---|---|
| Baked Fries (Large) | 12.0g |
| GFC Crispy Chicken Nuggets (10pc) | 11.0g |
| Satay Loaded Fries | 10.0g |
| Baked Fries (Regular) | 9.0g |
| Chicken Caesar Burger | 7.0g |
Frequently asked
Does Leon UK use seed oils?
Based on our menu research, Leon UK cooks with: sunflower oil (GFC chicken nuggets); sunflower/rapeseed vegetable oil blend (baked fries coating); rapeseed oil in sauces, buns, and dressings. Across the 31 menu items we analyzed, it averages 4.6g estimated PUFA per item, earning a seed-oil grade of B (Medium Risk).
What oil does Leon UK cook with?
Our research indicates: sunflower oil (GFC chicken nuggets); sunflower/rapeseed vegetable oil blend (baked fries coating); rapeseed oil in sauces, buns, and dressings. Preparation can vary by location, so treat PUFA numbers as estimates.
Does Leon UK use beef tallow?
No. Our research indicates Leon UK cooks with sunflower oil (GFC chicken nuggets); sunflower/rapeseed vegetable oil blend (baked fries coating); rapeseed oil in sauces, buns, and dressings, not beef tallow. For chains that fry in tallow or other real fats, see Tallow Watch.
Is Leon UK seed oil free?
No. Our research indicates Leon UK cooks with sunflower oil (GFC chicken nuggets); sunflower/rapeseed vegetable oil blend (baked fries coating); rapeseed oil in sauces, buns, and dressings, which includes seed oils. See the lower-PUFA orders above for the cleanest picks.
What is the safest thing to order at Leon UK?
Elderflower Presse is the lowest-PUFA item we analyzed at Leon UK, at an estimated 0.0g PUFA. See the Safest Orders list on this page for more options.
What should I avoid at Leon UK?
Baked Fries (Large) is the highest-PUFA item we analyzed at Leon UK, at an estimated 12.0g PUFA. Fried items and creamy, mayo-based sauces are usually the heaviest.
What are seed oils?
Seed oils — canola, soybean, sunflower, corn, and similar vegetable oils — are extracted from seeds using high heat and chemical solvents. They are very high in polyunsaturated fats (PUFAs), which are unstable at cooking temperatures and can oxidize easily. Many health-conscious eaters choose to minimize seed oils and prefer foods cooked in beef tallow, butter, coconut oil, or olive oil instead. This page shows estimated PUFA grams per menu item to help you make more informed choices. These are estimates — actual values vary by preparation and location. Curious why people avoid them? Read the evidence.
Compare other chains
JD Wetherspoon · KFC · Krispy Kreme · McDonald's · Nando's · Papa John's
See where Leon UK lands on the full Seed Oil Index, or check which chains cook in real fats on Tallow Watch. Wondering about a specific dish instead? The Is It Seed Oil food guide answers it for 200+ everyday foods, and the distributor oils page covers what independent restaurants fry in.