Burger King Bacon King UK (2026): Price, Calories & Full Guide
The Bacon King is Burger King UK’s most meat-forward beef burger — two flame-grilled patties, thick-cut bacon and melted cheese, with no lettuce, tomato or onion by default. This guide covers everything: price, calories, full nutrition, allergens, and a direct comparison against the Bacon Double Cheese XL and the other premium beef burgers on the UK menu, so you know exactly what you’re choosing between before you order.
What Is the Burger King Bacon King?
The Bacon King is built around two flame-grilled beef patties, topped with thick-cut smoked bacon, melted American-style cheese, ketchup and mayonnaise, all on a toasted sesame seed bun. Unlike the Whopper range, it skips fresh vegetables entirely, focusing purely on a beef-and-bacon flavour profile. Our team’s pick for anyone deciding between BK’s premium beef burgers: if you want maximum bacon and don’t miss the fresh toppings, the Bacon King is the most bacon-forward option on the entire menu.
Burger King Bacon King Price UK 2026
| Item | Price |
|---|---|
| Bacon King (burger only) | £9.99 |
| Bacon King Meal (with fries and drink) | Estimated — £13.99 |
Prices can vary slightly by store location, particularly at franchise-operated branches — always check the BK app for your local current price.
Burger King Bacon King Ingredients
- Beef patties: Two flame-grilled beef patties, cooked on BK’s signature broiler.
- Bacon: Thick-cut smoked bacon strips, the defining topping of this build.
- Cheese: Melted American-style processed cheese.
- Sauces: Classic tomato ketchup and mayonnaise — no mustard or BBQ sauce in the standard build.
- Bun: Toasted sesame seed bun.
Burger King Bacon King Calories & Nutrition
| Nutrient | Per Burger |
|---|---|
| Calories | 1,150 kcal |
| Protein | 60g |
| Total Fat | 77g |
| Saturated Fat | 29g |
| Carbohydrates | 48g |
| Sugar | 12g |
| Salt | 3.2g |
| Fibre | Estimated — 3g |
At 1,150 kcal, the Bacon King is one of the highest-calorie single items on the UK menu, and its 29g of saturated fat already exceeds the NHS’s recommended daily limit of 20g for women and comes close to the 30g limit for men in one burger alone. Its 60g of protein is the highest of any standard burger on the BK UK menu, which is why it’s popular with gym-goers despite the calorie count.
Bacon King vs Bacon Double Cheeseburger XL: What's the Difference?
The Bacon King and Bacon Double Cheese XL differ mainly in patty format, calories and protein. For the complete side-by-side comparison, see our Bacon King vs Bacon Double Cheese XL guide.
| Feature | Bacon King | Bacon Double Cheese XL |
|---|---|---|
| Patties | 2 standard patties | 2 XL patties |
| Bacon | Yes — thick-cut | Yes |
| Vegetables | None | None |
| Calories | 1,150 kcal | Estimated — 895 kcal |
| Protein | 60g | Estimated — 52g |
| Fat | 77g | Estimated — 54g |
| Price | £9.99 | Estimated — £9.99 |
The Bacon Double Cheese XL uses a different patty format (XL rather than standard double) and carries fewer calories and less protein than the Bacon King, despite a very similar price point. If you’re comparing the two purely on value-for-protein, the Bacon King edges ahead; if you want a slightly lighter option at the same price, the Bacon Double Cheese XL is the better pick.
Bacon King vs Double WHOPPER
| Feature | Bacon King | Double WHOPPER |
|---|---|---|
| Patties | 2 standard patties | 2 quarter-pound patties |
| Bacon | Yes | No |
| Vegetables | None | Lettuce, tomato, onion, pickles |
| Calories | 1,150 kcal | 1,140 kcal |
| Protein | 60g | 58g |
| Price | £9.99 | Estimated — £9.49 |
The two are almost identical on calories and protein — the real difference is bacon versus fresh vegetables. Choose the Bacon King for a rich, smoky, meat-only build; choose the Double WHOPPER for a fresher, more rounded flavour.
Bacon King vs BBQ Steakhouse Angus
| Feature | Bacon King | BBQ Steakhouse Angus |
|---|---|---|
| Beef type | Standard beef | Aberdeen Angus |
| Patties | 2 patties | 1 patty |
| Bacon | Yes | Yes |
| Sauce | Ketchup and mayo | BBQ sauce |
| Calories | 1,150 kcal | Estimated — 820 kcal |
| Protein | 60g | Estimated — 54.7g |
| Price | £9.99 | Estimated — £9.99 |
The Angus carries around 330 fewer calories with only slightly less protein, making it the lighter premium option at the same price point.
Burger King Bacon King Allergen Information
| Allergen | Present |
|---|---|
| Gluten (Wheat) | Yes — sesame seed bun |
| Sesame | Yes — sesame seed bun |
| Milk | May be present — cheese and mayo |
| Egg | Yes — in mayonnaise |
| Mustard | Not in the standard build |
| Soya | May be present — shared equipment |
For the complete 14-allergen breakdown across the whole menu, see our Burger King Allergen Menu.
How to Customise the Burger King Bacon King
- Remove mayo — cuts roughly 5–8g of fat per serving.
- Remove cheese — reduces fat and removes milk as a declared allergen.
- No bun — removes gluten and sesame; served in a box instead.
- Add BBQ sauce — a smoky twist alongside the existing bacon.
- Add jalapeños — for extra heat.
All changes can be made at the kiosk, in the app, or at the counter.
Pairing the Bacon King With Sides
Since the Bacon King is already a heavy option, lighter sides help keep the overall meal more balanced.
| Side | Calories | Price |
|---|---|---|
| Onion Rings (6pc) | 198 kcal | £4.49 |
| Regular Fries | 380 kcal | £2.99 |
| Chilli Cheese Bites | Estimated — 420 kcal | £4.99 |
| Loaded King Fries | Estimated — 480 kcal | £5.99 |
For the full range, see our Burger King Sides Menu.
How to Order the Burger King Bacon King
- In-store: Order at the counter or self-service kiosk, under the Flame Grilled Burgers section.
- Drive-thru: Available at all BK UK drive-thru locations.
- BK App: Pre-order, pay ahead, and earn Royal Perks Crowns.
- Delivery: Available via Uber Eats, Deliveroo and Just Eat at participating branches.
FAQs — Burger King Bacon King
How many calories are in the Burger King Bacon King?
The Bacon King carries 1,150 calories for the burger alone.
How much does the Burger King Bacon King cost in the UK?
The burger alone costs £9.99 at most UK stores; prices can vary slightly by branch.
What’s the difference between the Bacon King and the Bacon Double Cheese XL?
They’re different builds — the Bacon Double Cheese XL uses an XL patty format and carries fewer calories and less protein than the two-patty Bacon King, at a similar price point.
Is there a separate “Bacon King XL”?
Answer: No — there’s no separate item called the Bacon King XL. People often search this when they mean either the standard Bacon King or the Bacon Double Cheeseburger XL (Bacon Double Cheese XL), which are two different burgers covered in the comparison above.
Does the Burger King Bacon King contain any vegetables?
No — the standard build skips lettuce, tomato and onion entirely, focusing on beef, bacon and cheese.
Is the Burger King Bacon King suitable for a gluten-free diet?
No — the sesame seed bun contains gluten and sesame as standard. Removing the bun (served in a box) removes both.
Is the Burger King Bacon King halal?
Most UK BK branches are not halal-certified as standard — check your local restaurant directly for specifics.
Can I get the Bacon King as a meal deal?
Yes — with fries and a drink, the meal typically runs to an estimated £13.99, though this can vary by branch and current promotions.
Which is better value, the Bacon King or the Double WHOPPER?
Both sit close in calories and protein at a similar price — the Bacon King leans purely meat-and-bacon, while the Double WHOPPER adds fresh vegetables for a lighter overall profile.
Final Thoughts
The Bacon King remains one of the most indulgent burgers on the UK menu — two patties, thick bacon and melted cheese for £9.99, with the highest protein count of any standard BK UK burger. If you were actually looking for the Bacon Double Cheese XL, the comparison table above should make the difference clear before you order.
For the full picture, head back to our Burger King Menu UK homepage, check the complete Burger King Prices list, or see our Burger King Allergen Menu before ordering if allergies are a concern.