Byron in Lambeth

Always hits the spot. Great food, value for money and solid service

Thank you to Florin who was the best waiter and made my experience unforgettable! So many chain restaurants are not great on service but Florin went above and beyond. I will be bringing back my whole family for my birthday now :) food was wonderful - the mash is the best.

Went here for lunch when visiting London, the food was sooo good and our server was so lovely! Complementary ice cream and popcorn was also great. 100% good value for money!!

Roberto was our waiter he was sooo nicee super friendly and really looked after us

Served by Roberto, really great guy who made our experience very good!

Roberto and florim were amazing. Great convo and service !

Very lovely service from Roberto and Florin

Everything was great, the food was amazing, and Florin was extremely helpful, kind and efficient.

Had a lovely dinner last night. The menu is quite small but has good differing options. The wagyu steak was amazing, the burger was tasty as well. The staffmembers were really kind and took time to chat for a bit. The only downside is that our food came out fast, our dinner was completely finished after 40 minutes in. The ambiance could be a bit better, the tables were too close to eachother.

As always, the food and atmosphere is fantastic. Our server, Florin, was lovely and very helpful!

Came in about 1830 little bit of a wait but that was fine. Our server I believe was lex he was AMAZING super friendly and just really nice. Food was cooked amazing and came super quick. Even when keeping the guy on the way out was friendly as well. I've been to a few places but this has been one of the best experiences for a while

Perhaps the coolest place I have ever eaten at!! The food was fantastic. Little touches like the popcorn and ice cream add so much to the experience. Our waiter was amazing (his Mom used to work in Corfu, where my great grandfather is from). He took such a genuine interest in me and family. He made our dinner out an experience to remember.

Hands down the best rib eye streak I have had. Many thanks to Lex who was very kind and helped us man euvre the menu and made the dining experience a 10/10. Don’t miss the vanilla ice cream on the way out !

We had a great meal here, fast and Efficient. And an ice cream to go!

Florin best service as always. Thank you for hosting us again and again!

Consistently tasty steak and creamed spinach. Florin served us today and was very welcoming and helpful. 😊

I really liked it and it was great that the menu is so focussed. Steak was tasty and the aubergine side was fantastic. Ice cream on exit was a nice touch.

Tucked just a short walk from Waterloo station, Flat Iron Waterloo delivers the signature charm of the brand with some unique touches. The space is stylish and welcoming, with warm lighting, exposed brickwork, and the steady hum of a busy open kitchen. Despite being known for their £14 flat iron steak, the burger here is a hidden gem—and clearly the star of your visit. The Burger: Rich, juicy, and perfectly seasoned, the Flat Iron burger is made with quality beef and cooked with precision. The patty has a strong meaty flavour—likely using trimmings from their in-house butchery—and it’s paired with sharp cheese, a soft toasted bun, and a tangy sauce that adds depth without overwhelming the beef. The texture and taste hit a brilliant balance between indulgent and clean. Service: Flat Iron staff are generally attentive and friendly, often offering complimentary popcorn while you wait, and a free ice cream cone on the way out—a small but memorable touch. Atmosphere: Lively without being too loud, and ideal for everything from casual dinners to post-work meetups. The Waterloo branch is particularly good for convenience and ambiance, blending buzz with comfort. Final Verdict: A strong choice if you’re in the area, and a must-visit if you’re craving a standout burger that competes with London’s best—without the price tag. Bonus points for consistency and the little perks that make it feel like more than just a quick bite.

Good steak. Not much choice. Fair price for London

Top notch steak, cooked perfectly to order. Sides were amazing, as was Florin's service. The order was turned around very quickly, and and a complimentary ice cream to finish off the meal. It was kind of quiet as we were eating in that in-between time after lunch and before dinner.

Excellent food and even better service from Roberto!

Enjoyed my ribeye a lot at flatiron, but the service was the best part of the experience. It was an absolute pleasure to be served by Roberto, he was very attentive and lovely to talk to.

Service was amazing from the moment we walked in! Angie was a great server and the wait time for food was so quick even though it was a busy Saturday afternoon! The food was very flavourful and filling! You even get free popcorn and water for the table at the start and a free ice cream when you leave using a cute little silver cleaver token! Great experience all round!

Lovely food great price and great staff. Roberto made our evening :)

Lex was so friendly made experience a very happy one thanks Lex

I had a wonderful experience at Flat Iron Restauran and I want to give special recognition to Joseph for his excellent customer service. He took the time to explain the menu thoroughly and was very attentive to my allergy concerns, which I truly appreciated. His professionalism and friendly attitude made my visit even more enjoyable. The food was delicious, and the prices were very reasonable. I highly recommend Flat Iron Restaurant to others and will definitely be returning. Thanks again to Joseph for making my visit so memorable it was truly super amazing

Great service best food by Legz the do

Lex was the best guy to serve us. The steak was quite good too. Chips were probably the best I had in a long time.

Food was great, but above all Lex (i.e. The Don) made our night special!

I liked the food and the waiter they were the best esspecialy the greek don :))

Amazing food. Delicious ribeye steaks and mash. Dan was amazing explaining all the specials and great service. Thanks!

Excellent place to eat meat. Angie was amazing explaining to us everything

We had a flat iron each, creamed spinach, bone marrow mashed, house lager & rose lemonade as well as ice cream to go on the house, awesome food and service!

Had such a lovely lunch here today, served by Peter - warm, friendly, and incredibly knowledgeable about the menu. His smile was infectious, and his positive attitude really lifted the whole experience. The food was great - the steak is always perfectly cooked, and the sides are well seasoned. And of course, I can never say no to the popcorn and ice cream!

Visited Flat Iron after a trip to London and wasn't disappointed. We didn't have a booking but they managed to get us a table instantly as long as we could be done by a certain time. Staff were friendly and helpful - explained the cuts of steak and were more than accommodating with our little ones' milk allergy. We ordered a Wagyu Steak and Classic Flat Iron steak and omg... they were amazing! My partner preferred the Wagyu but for me, the taste and tenderness of the classic one was perfect. I've been to other steak restaurants where the price was four times the cost of this and Flat Iron wins hands down on the actual steak! The Beef dripping popcorn was a nice touch, wasn't sure before I tried it but it truly is amazing. Also, the ice cream tokens were also a nice touch. Unfortunately, I didn't get to try it (there was no dairy free option for the little one and didn't want to eat one in front of him). Kept the little cleaver tokens for next time or maybe just keep them as a souvenir! Overall a great experience :D

Amazing meat for a good price in London. The free ice cream at the end was great too.

Been at Flat Iron several times now, today my first time at the one in Waterloo. I’ve had an excellent wagyu bavette with the bone marrow garlic mash and a caraffe 375ml of the Zesty Sicilian white wine. I was very very happy about the whole meal, and the lovely waitress Amelia has made it also better with her smile, she’s been very kind and attentive giving me an excellent service, thank you so much!

Great food as always (across the different branches). Excellent service.

Flat Iron in Waterloo is just one of those places that gets it right every single time. The £15 steaks are always spot on – cooked perfectly and packed with flavour. The sides are just as good too – the creamy garlic mash and beef dripping chips are honestly hard to beat. They add those little touches that make the experience feel special, like the free popcorn & water when you sit down and the ice cream at the end. It’s the kind of stuff that keeps you coming back. Even the sauces are only £1 each, which is a steal compared to most other steak spots. The staff are always super friendly and the whole place has a nice, clean vibe – even the toilets are well looked after. I’ve never had a bad meal at any Flat Iron, and the Waterloo one is definitely worth checking out. Highly recommend.

Really good food. The burger was really tasty and so was the meat. The mash with bone marrow was to die for. Service was friendly and fast. Don’t like the automatic addition of (optional) service fee, i would like to decide myself how much without making it awkward. But this is a small thing, the food and service is great

Roberto is the boss! Literally took my entire experience to another level. Food was great also

Beautiful experience. Quality meat and service too! the boy who served us, Samuel, very friendly and precise, also spoke Italian and this made us feel at home. Highly recommended! Also for the pampering they give both with popcorn while waiting and ice cream as dessert. Only note, it would be nice if you could order bread for those who wanted to choose it to accompany the meat.

I visited the Flat Iron Waterloo branch for the first time today and was served by Mia. Mia is asset to the restaurant I was very impressed with her customer service and warm kind manner. It's been a very long time that I have experienced excellent service in s restaurant.

Fast service, great food. Nico, an Italian boy, the person who served us, was very kind and was able to give us excellent advice on choices!

Roberto did a great job serving us and making us feel welcome. Flat Iron provided great food as usual, highly recommend for anyone looking for a consistent dining experience.

Great food and atmosphere and thanks to Roberto for making it a special evening for a birthday! Will be coming back!

Lovely dinner! The steak was delicious, so were the sides and the complementary ice cream was the cherry on top! Roberto was especially amazing and funny, he’s the guy! Will be coming back

Jade, our waitress was above and beyond helpful. A total asset to the Flat Iron business who made my son feel 10ft tall.

Such a lovely place for dinner, the steak was amazing and Roberto, our server was so lovely too! Highly recommended! 🥰

Really cool place. Great services (big thanks Lex!). Good food. The bonus ice cream at the end is bright reminder to return.

Nice steak, sauce and sides. restaurant atmosphere nice too. quick turnaround. roberto is a good server

Most amazing steak I have ever eaten in my life, this was also my first time eating bearnaise sauce. I didn’t know what that was before I ate here and I asked the server if it was made of bears. Apparently it’s not. Either way, if I was on death row, I would seriously consider eating my last meal from here 42/10 (42 is the best number) would reccomend

Out of scale. Incredible place starting from the cute and typical atmosphere. The food is 10/10 especially the truffled burger with three cheeses. This is served with a side dish of your choice. Prices are low and convenient. Popcorn is also brought at the beginning and ice cream offered at the end. Friendly service, many Italians work here.

Great restaurant, The +: Good meat, top service, free ice cream. THE - : Disappointing pepper sauce Very noisy room

Thanks to Roberto for his impeccable service, I recommend!

Everything was great, specially the waitress Wiktoria which was so kind and helpful all the time

Best burger I ever had. Great service and atmosphere. Highly recommended.

Roberto was amazing He deserves his bottle of wine! Super good meat

Excelent food with high quality ingredients and really tasty. Highly recommend

The flat iron steak was amazing!! Do order the medium rare as per the Chef’s recommendation. Spinach, crispy bone marrow mash was wonderful too. Service was wonderful. Lex was really attentive and he introduced the menu to us rlly well :) best service in my trip to UK! 10/10 will be back in my next trip to London.

Lex was great - thanks for an amazing experience as always!

It's very tasty. Small menu, but all dishes are perfect! Afterwards they treat you to ice cream

We had a great time made even better with our server Mia, great for chats and making sure you have a great time!

Just like the AI summary says: good food, great service and a nice atmosphere. Steaks are the choice and the ice cream after dinner is the cherry on top. Usually crowded.

Roberto was a very helpful server and was very fast and always there when help was needed. Great experience

Mohammed delivered excellent service it was my first time coming to flat iron with my family and he explained everything perfectly.

The atmosphere was made by the amazing service Justin gave us. I happen to come here spontaneously on my birthday, also 1st time visiting Flat Iron and the whole experience exceeded my expectation. Definitely wont be my last time coming back. Thank you Justin for making the experience unforgettable! Btw the stake YUMMY

Food was excellent as usual. Service was spectacular by Roberto. He was very helpful, quick, friendly :) and on point. Flat irons the best🤌🏻✨.

Good service and delicious food at reasonable price. The sides were also very tasty

Really enjoyed the flat Iron steak Perfectly seasoned. Special praise for the creamed spinach side dish!

This might be the best flat iron branch I’ve been to in London!!! The food is delicious as usual, but it was the service that was the cherry on top! Thank you to the kind hostess who took care of us and a shout out to Roberto for his amazing service and fun conversations. We really had such a good meal & we will definitely be visiting this specific branch again! :)

Great food. Amazing service. Sam was the waiter who looked after us and he was great. They even . Sang my friends happy birthday (we had 2 at the table).

My favourite branch! Roberto was sooo lovely too 🫶🏾🫶🏾🫶🏾

A steak as good as I could have expected for a very good price. Mac@cheese with truffle. Chips. Clear recommendation.

Amazing service and amazing food will definitely be coming back

Carlos Nella Absolutely stunning service! We actually lost a hat after our dining here. Came back after few days ,got our stuff back as well, and here we are! Thank you so much ! Absolutely amazing steak guys you should come and check out the new place !

Outstanding Experience at Flat Iron Waterloo I can’t recommend this restaurant enough! We came as a large group and were lucky to be accommodated in the private seating room, such a great touch that made the evening feel extra special. From start to finish, everything was perfect. The staff were absolutely outstanding — from the warm welcome at the door to the attentive service throughout, everyone was friendly, helpful, and genuinely made us feel at home. We tried a variety of dishes, but the burger and fries really stood out — simple, packed with flavour, and done to perfection. Flat Iron Waterloo is a definite go-to, whether you're dining as a group or looking for a great meal out. Will definitely be back!

You can eat practically only meat and choose a side dish. It may seem reductive but don't be fooled. Having few things keeps prices low and quality excellent. Advised.

Excellent food and steak was perfect.

Exceptional service (Florin) food good as ever

Very friendly staff with good food. The ice cream offered at the end definitely was the cherry on top. Would recommend.

First time at Flat Iron and we can’t wait to go again! Great service and amazing food! Would like to thank our server, Roberto, who made our experience even better, he was fab!

I came with my mum on my birthday to celebrate and we had the most delicious food, service was incredible and Florin went out of his way to ensure I was celebrated. Incredible team and always top standard food, especially the ice cream.

Great food and service (Florin was amazing!!)

We had the best time! Food was amazing and Anna looked after us so well!!

Delicious steak and ice cream! Anna was the loveliest :)

I'm a big fan of Flat Iron and have been going for years. It was my first time at the Waterloo restaurant, and we asked for the steaks to be cooked medium/well, red but not running excess blood. The steak arrived well done, and we told the waiter, who didn't seem interested in changing or rectifying the steaks. Disappointing.

Excellent meat restaurant but with a somewhat reduced menu. Efficient and friendly service, pleasant environment.

The staff is always nice and welcoming! Special thanks to Florin my waiter.

I've just had a super streak!! Dan was super helpful and thanks to his advice and professionalism I had a great time! Totally recommended!!

Has to be a little overrated as a chain now. Once was good value and new now nothing special.

5/5 as always. My server was flavi 🤲🏼

Like other reviews, the servers were very friendly. So much so that I feel pride in my job! For Koreans, I recommend cooking at medium-well done or higher! I was satisfied with the cost-effectiveness, atmosphere, and taste! The free ice cream looks ordinary, but it's a taste I've never had before. Be sure to try it!

Always love going to the Flat Iron steak restaurant chain, such great value for money compared to other places, the steaks and side orders are so tasty. Warm friendly staff too, love the little meat cleaver you get at the end to receive a free yummy ice cream.

A great venue. Staff were awesome, especially our waiter. (apologies, but I have forgotten her name, but she works in Biology!) Got our order and the food arrived within 15 mins. The steak was great along with the truffle mac and cheese and the fries. The plate (the food came on a wooden board) was duely demolished. As we were leaving you get a ice cream which is a great way to finish the meal off. All this at prices you would struggle to get anywhere else. Hats off to the Flat Iron!

Florin and staff are so lovely! Thank you so much for taking of us! We will be back

A great value, but incredibly tasty steak and sides, with attentive servers, and lovely little free extras like popcorn and delicious ice cream. Would definitely take my meat eater friends there

best steak and drinks ever trust me

Crazy good steak, delicious side dishes and good value for your money. Definitely recommend this place for anyone looking for perfectly juicy and tender steak. Service was great and welcoming. Huge thanks to our server, Victoria, for the warm welcome and swift service.

Nice location, the food was amazing and so was the drinks, the server Victoria was really nice also!