Flat Iron Borough menu with up-to-date-prices

Flat Iron Borough Menu

September 8, 2026
by
1 min read

Flat Iron Borough is a specialist steak restaurant on the cobbled Clink Street in Bankside, close to Borough Market, Southwark Cathedral and the Globe Theatre. It occupies a Victorian building whose original windows and exposed cast iron columns give the dining room a strong sense of place.

The signature Flat Iron steak is the menu’s main attraction, presenting an approachable cut with the restaurant’s straightforward focus on well cooked beef. Changing blackboard specials, including a Wagyu steak of the day when available, give returning diners something beyond the core offering.

Beef dripping chips and crisp bone marrow garlic mash are among the best known accompaniments, designed to turn the steak into a complete meal. Other sides and sauces allow each table to shape the order, whether guests keep it concise or share several extras.

A compact, considered wine list supports the steak led menu without making the experience overly formal. Oak tables, vintage chairs, warm lighting, plants and reclaimed Staffordshire blue quarry tiles balance the historic building with the recognisable Flat Iron style.

Address: 11 Clink Street, London SE1 9DG, England

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Flat Iron Borough Menu

Steak

Flat Iron Steak
£15

325 kcal

Beef Specials

Smashed Onion Double Cheeseburger
£14

Flat Iron Herd Beef, 796 kcal

35 Day Aged Ribeye
£20

416 kcal

Wagyu Steak of the Day
£24

Ask your server for today’s cut, 446 – 694 kcal

Sides

Homemade Beef Dripping Chips
£4.50

490 kcal

Crispy Bone Marrow Garlic Mash
£5

543 kcal

Creamed Spinach
£4.50

425 kcal

Green Salad
£3.50

210 kcal

Truffled Macaroni Cheese
£5.50

525 kcal

Roast Aubergine
£5

Tomato, basil, mozzarella, 420 kcal. Available as a main – 9.0

Sauces

Bearnaise
£1.50

195 kcal

Peppercorn
£1.50

55 kcal

Homemade Smoked Chilli Mayo
£1.50

210 kcal

Wild Mushroom
£1.50

55 kcal

Wines

Available in 175ml / 375ml / 750ml unless otherwise stated.

Silky Italian Rosso
175ml £6.50 / 375ml £13 / 750ml £25

Red

Velvety Chilean Merlot
175ml £8 / 375ml £16 / 750ml £30

Red

Smooth Flat Iron Malbec
175ml £9 / 375ml £18 / 750ml £33 / Magnum £58

Red

Juicy Puglian Sangiovese
175ml £10 / 375ml £20 / 750ml £36

Red

Dark Cherry Pinot Noir
175ml £10.50 / 375ml £21 / 750ml £38

Red

Mellow Rioja Reserva
175ml £11 / 375ml £22 / 750ml £42

Red

Fruity South African Chenin Blanc
175ml £6.50 / 375ml £13 / 750ml £25

White

Zesty Sicilian Catarratto
175ml £8 / 375ml £16 / 750ml £30

White

Vibrant New Zealand Sauvignon Blanc
175ml £9.50 / 375ml £19 / 750ml £33

White

Dry Côtes de Provence
175ml £9 / 375ml £18 / 750ml £33

Pink

Appley French Bubbles
125 ml £8 / bottle £30

Fizz

Classic Rich Champagne
bottle £40

Fizz

Softs

House Fizzes
£3.50

Lime & Mint / Apple & Rhubarb / Rose Lemonade, 52 / 70 / 58 kcal

Cocktails

Aperol Bellini
£9

Bubbles, Aperol, lemon sherbet

Classic Old Fashioned
£9

Bourbon, smoked demerara syrup, bitters

Passion Fruit Collins
£9

Vodka, Aperol, passion fruit, vanilla, soda

Tony’s Margarita
£9

Tequila, Cointreau, lime, hibiscus

Drunken Mule
£9

Overproof pineapple Rum, makrut lime, ginger beer

Raspberry Gin Spritz
£9

Raspberry, elderflower, gin, bubbles

0% Cocktails

Citrus Margarita
£5

Lemon, lime, orange, hibiscus, 91 kcal

Virgin Passion Fruit Collins
£5

Passion fruit, vanilla, lime, soda, 86 kcal

Sober Mule
£5

0% rum, pineapple, makrut lime, ginger beer, 54 kcal

Beers

Freedom Four Lager (4.0%)
£4.80

Lager

Small Beer Lager (2.1%)
£5

Session

Pillars Helles (4.6%)
£5.50

Helles

Mondo Dennis Hopp’r (5.3%)
£6

IPA

Verdant Lightbulb (4.5%)
£7

Extra Pale, 440ml

Brooklyn Special Effects Lager (0.4%)
£4.80

Low

Wignac (4.5%)
£5.50

Cidre