A steak at Flat Iron costs £15. Add the chips and you are at £19.50, which is the cheapest proper steak dinner in central London.
But if anyone in your party is vegetarian, read the next section before you book, because the chips are not.
The chips are cooked in beef dripping
Flat Iron state plainly that their chips and popcorn are cooked in beef dripping.
So the side everybody orders, and the free popcorn that arrives while you wait, are both off limits to vegetarians. That is not obvious from the menu and it catches people out.
The rest of the vegetarian position is equally honest and equally limited. The Roasted Aubergine main and the Creamed Spinach both contain Parmesan, which is made with rennet. The Green Salad is vegetarian but not vegan. There are blackboard specials to ask about.
Their own summary is that everyone is welcome but the menu has limited options for vegetarians, which is a fair description of a steak restaurant that does not pretend otherwise.
The beef is not halal. They use traditional European seam butchery, which preserves individual muscles or muscle groups to maximise tenderness.
The whole menu, with prices
Flat Iron Steak: £15. 325 kcal. The one the place is named after.
Smashed Onion Double Cheeseburger, Flat Iron Herd beef: £14. 796 kcal.
35 Day Aged Ribeye: £20. 416 kcal.
Wagyu Steak of the Day: £24. Ask your server for today’s cut.
Sides: beef dripping chips £4.50, crispy bone marrow garlic mash £5, creamed spinach £4.50, green salad £3.50.
Soft drinks are £3.50, including house fizzes in Lime & Mint, Apple & Rhubarb and Rose Lemonade.
Wine starts at £6.50 for a 175ml glass and £25 a bottle for the Silky Italian Rosso. Champagne is £40 a bottle, and there is a magnum of their own Malbec at £58.
So the arithmetic: £15 steak plus £4.50 chips is £19.50. Add a £6.50 glass of wine and dinner is £26. Go up to the ribeye and a bottle and you are at £45 a head, which is where most London steak restaurants start.
Calorie counts are published against every dish, which almost no comparable restaurant does.
Only six of the London branches do a kids’ menu
The branch difference that matters most, and it is buried in an FAQ.
A kids’ menu is available at Hammersmith, Kensington, Piccadilly, Southbank, Victoria and Westfield in London, plus Brighton, Bristol, Cambridge, Leeds, Manchester and Newcastle outside it.
That means no kids’ menu at Covent Garden, Soho, Shoreditch, Borough, King’s Cross, London Bridge, Marylebone, Spitalfields, Tottenham Court Road, Waterloo or Clapham.
Eleven London branches without one and six with. If you are bringing children, the choice of branch is the whole decision, and their restaurant pages carry an icon for it.
Where the London branches are
Borough, 11 Clink Street SE1 9DG. Covent Garden, 17 to 18 Henrietta Street WC2E 8QH. Hammersmith, 18 Hammersmith Broadway W6 7AB. Kensington, 9 Young Street W8 5EH. King’s Cross, 47 to 51 Caledonian Road N1 9BU. London Bridge, 112 to 116 Tooley Street SE1 2TH. Marylebone, 42 to 44 James Street W1U 1EY. Piccadilly, 21 Denman Street W1D 7HS. Shoreditch, 77 Curtain Road EC2A 3BS. Soho, 17 Beak Street W1F 9RW. Southbank, in the Royal Festival Hall on Belvedere Road SE1 8XX.
Also Spitalfields, Tottenham Court Road, Victoria, Waterloo, Westfield London and Clapham. Outside London: Brighton, Bristol, Cambridge, Leeds, Manchester, Newcastle, Birmingham, Liverpool and Glasgow.
Note the Southbank branch sits inside the Royal Festival Hall, which makes it the obvious dinner before a concert there.
Covent Garden is listed as open and bookable as at 6 October 2026, following its closure earlier in the autumn.
Opening hours vary by branch
Flat Iron publish no group-wide opening times. They vary by location and sit on each restaurant’s own page.
So check the branch rather than the brand, particularly for a late booking.
Allergies
Tell your waiter when you order. Teams are described as fully trained on allergens and able to advise which dishes suit, though they cannot guarantee the absence of traces of nuts or other allergens. Full allergen information is published on their site.
How to plan it
Cheapest full meal: steak and chips, £19.50.
With wine: £26 a head at the entry glass price.
Vegetarian in the party: do not order the chips or the popcorn, both cooked in beef dripping, and note the aubergine and spinach contain rennet Parmesan.
With children: Hammersmith, Kensington, Piccadilly, Southbank, Victoria or Westfield. The other eleven London branches have no kids’ menu.
Before a concert at the Royal Festival Hall: the Southbank branch is inside it.
Checking hours: look at the branch page, because there is no group-wide time.
Trading up: the 35 day ribeye at £20, or the Wagyu of the day at £24.
Flat Iron
- Address
- Seventeen London branches including Covent Garden at 17 to 18 Henrietta Street WC2E 8QH, Soho at 17 Beak Street W1F 9RW and Southbank inside the Royal Festival Hall
- Nearest
- Varies by branch
- Hours
- No group-wide times. Opening and closing hours vary by location and are published on each restaurant’s own page
- Booking
- Online by branch, with walk-ins taken
- Price
- Flat Iron Steak 15 pounds, Smashed Onion Double Cheeseburger 14, 35 Day Aged Ribeye 20, Wagyu Steak of the Day 24. Beef dripping chips 4.50, bone marrow garlic mash 5, creamed spinach 4.50, green salad 3.50. Soft drinks 3.50. Wine from 6.50 a glass and 25 a bottle, Champagne 40
- Standing
- A 15 pound steak, cut by traditional European seam butchery, with free popcorn while you wait
How to get in
Steak and chips comes to 19.50 pounds, which is the cheapest proper steak dinner in central London. The chips and the free popcorn are both cooked in beef dripping, so neither is vegetarian, and the aubergine and spinach contain rennet Parmesan. A kids menu exists at only six of the seventeen London branches. Calorie counts are published on every dish.
Where to go next
The steak page covers the step up, and Honest Burgers is the burger equivalent where the branch changes the menu.
Cheap eats covers the rest under twenty pounds, and the Southbank Centre is where one branch lives.
Questions we get asked
How much is a steak at Flat Iron?
The Flat Iron Steak is £15. A 35 Day Aged Ribeye is £20 and the Wagyu Steak of the Day is £24. Beef dripping chips are £4.50, so steak and chips comes to £19.50, and adding a £6.50 glass of wine makes dinner £26.
Are Flat Iron chips vegetarian?
No. Flat Iron state that their chips and popcorn are both cooked in beef dripping, so neither is suitable for vegetarians. The Roasted Aubergine main and the Creamed Spinach also contain Parmesan made with rennet, and only the Green Salad is fully vegetarian, though not vegan.
Does Flat Iron have a kids' menu?
Only at some branches. In London it is available at Hammersmith, Kensington, Piccadilly, Southbank, Victoria and Westfield, and outside London at Brighton, Bristol, Cambridge, Leeds, Manchester and Newcastle. The other eleven London branches, including Covent Garden, Soho and Shoreditch, do not have one.
Is Flat Iron beef halal?
No. Their beef is not halal. They use traditional European seam butchery, which preserves individual muscles or muscle groups to maximise tenderness.
What are Flat Iron's opening times?
There are no group-wide hours. Opening and closing times vary by location and are published on each restaurant's own page, so check the branch you are going to rather than the brand.
Is Flat Iron Covent Garden open?
Yes. As at 6 October 2026 the Covent Garden branch at 17 to 18 Henrietta Street, WC2E 8QH, is listed as open and bookable, following its closure earlier in the autumn.
How many Flat Iron restaurants are in London?
Seventeen: Borough, Covent Garden, Hammersmith, Kensington, King's Cross, London Bridge, Marylebone, Piccadilly, Shoreditch, Soho, Southbank, Spitalfields, Tottenham Court Road, Victoria, Waterloo, Westfield London and Clapham. The Southbank branch is inside the Royal Festival Hall.
Written by Robert J Wills, no. 299 in the guide.
Last checked 6 October 2026 against the venues' own published information. Nobody pays to appear here and we take no bookings.
