OK, I must confess it took me quite a while to find the street this venue is at. I am not very good…read morewith directions. But when I finally found it and walked through the doors the huge queue did not scare me. A bunch of my friends kept saying: "this is the best burger in town, you must have it", and I was determined to try it, no matter what. The queue was big but it didn't take a lot of time to get my order, I think the biggest problem is finding a table, if you didn't save one before ordering. But let's talk about food! The burgers are indeed delicious, juicy and yummy. Basically you choose if you want a regular burger, a cheeseburger or a steak burger and add some toppings (like bacon or sauces) you might want with it. Are you a vegetarian? No problem, they have veggie option. Also, they are pretty flexible in changing the order or the ingredients inside the burger (which you may know is not very common in London), so if you want something different or want your burger cooked another way they encourage you to let them know, so your experience will be even better. Come and try, you will not regret it.

Tommi's Burger Joint is back...and I have to say me like it! I'm generally not the one who's always…read morefloating on the wave of the hip places, but given that this joint is in a rather unhip neighbourhood - aka corporately boring Marylebone - I am actually quite happy about this addition. I've been to Tommi's for lunch yesterday; I got there right around noon and that was a good thing as the lunch crowd started to pour in just after me. I ordered the "Deal of the Century", which includes a burger, fries and a drink. Although they have a couple of sauces on sale, I don't think they're necessary as they also offer a wide variety of free condiments, such as various ketchups, mayos, chilli sauce & my absolute favourite...the caramalised onion. (They are that good and I wouldn't be surprised if they started charging for them soon.) Like I said, I like Tommi's Burger Joint - especially for the fact that it's dared to come to a rather bland location. I just hope that they won't get this silly idea to expand their emporium in a Byron style fashion...as soon as I see another Burger Joint popping up, they will have lost me as a costumer. I plea you: stay unique!

The place was heaving with locals and tourists. The kiosks really helped. Short wait and order in…read more Longer short wait and there's my grub. An excellent burger. So meaty and cheesy and juicy. Hit it hard. I'll be back! Enjoy!

Yes! The US legends have made it across the pond to deliver there amazing burgers are fries…read more Five Guys doesn't use refrigerators so the burgers are freshly prepared and Tate delicious. While the price is more Byron than McD's, the food is so worth it! Whatever you do, be sure to get the Cajun fries. They are the best!

Passed GMK while wandering around South Kensington one rainy morning...saw the banner or sign…read moreadvertising best burger in London, and laughed to myself thinking "yea, a guy from Texas not buying this line"...but I was intrigued. Place is small, and has a cool Kensington urban look. Dropped back by few evenings later, ordered, and can only say WOW! Meat has amazing flavor and creatively prepared, bun fresh and also amazing, and the toppings were unique and...well...you know the drill, amazing! Onion rings were top notch, and the service was friendly and attentive. Seems that London can be a bit hit and miss when you stray from the standards...but GMK is a definite hit, and well worth searching out! Now if I can just find the pic of the burger...or did I eat it too quickly?

My family and I really enjoyed eating here. The burgers were good! And perfect size. I also really…read moreliked the fizzy drinks and free refill. The staff was very friendly and helpful.

Everything on the menu is always fire! The manager and his staff are really nice hard working…read morepeople.

I am honestly surprised to see so many lukewarm reviews of this location relative to the 20 or so…read moreothers of the same burger chain in London. I had a great experience here, but then again, it's possible that it could have been even better at some of the other locations. Looks like I'll have to try them out next time I'm in town... I believe I had the Honest Burger, which comes with red onion relish, smoked bacon, cheddar, pickled cucumber and lettuce, with a side of rosemary salted chips. For £11, I thought the quality was great - the beef patty was lean and cooked to the right temperature. Portion-wise, I left more than full. Apparently, they also serve BBQ chicken wings and brunch items. It seems they source their ingredients and cold beverages locally. I was staying a few blocks away, so this location was very convenient for me, but these guys are pretty much scattered throughout the city and are definitely worth a stop if you find yourself in the mood for a burger!

Wonderful moment in this small, nice and cute restaurant. The pulled pork burger was one of the…read morebest burger I have ever eaten, and I have been to the US ! The chocolate fondant was just amazing and I know what I am talking about, I am french.

Normally at this time I'm home in LA for the summer, eating lots of burgers and drinking lots of…read moremilkshakes so lately I've been having cravings for these two things. I've had lots of good burgers in London but I had yet to find a place that also offers milkshakes. First, the milkshake. I ordered the mint one, which I wasn't aware was a possible flavour but was extremely excited about because I love mint. It was so thick and creamy and absolutely delicious! One of the best milkshakes I've ever had. Served in the stainless steel cup with a straw, frosted and freezing cold. Perfect. Next our burgers. We ordered the hamburger and the chicken burger with two small sides of fries. Everything about the burgers were so good: the bun, the toppings, the beef, the deep fried chicken especially! My boyfriend enjoyed the fries but unfortunately I did not, some were a bit soggy and reminded me of In-n-Out fries which I don't like. More of personal preference but I'm still glad I tried them. Aside from the food the location is also spot on, very close to Bloomsbury campuses. The meal for the two of us was kind of pricey (£23) but it was definitely worth it. Next time I just won't get the fries.

Their burgers are big & tasty! The onion rings and fries were delicious as well…read more Friendly service & clean.

Lovely well lit restaurant with space, I prefer this one to the one in Earls Court based of the…read morefact its more spacious and not so bright, perfect evening to enjoy a meal, ordered major tom burger and cheesy chips . hit the spot great food

Gourmet burger shops are a recent craze in my home city of Perth, Australia in the past 2-3 years…read moreso I was a bit unsure about trying them at GBK. I'm not a big burger fan. I ordered the cheese burger from the lunch menu and immediately regretted it. I should have tried the more exotic burgers on the main menu. The cheese burger was excellent!! Possibly the best burger I've ever had. If the standard burger style is so good, I can only imagine how the others taste. The other reviews are not joking, this place is great!! It's a must try if you are in the area in my opinion.

awful experience, they messed up our £70 order and gave my son a beef patty instead of a Chicken…read moreburger. they acknowledged the mistake but refused to give him the chicken burger as they said the kitchen was now closed. I asked them to open it up for my 5 year old son and they refused. My son was in tears and only ate chips. awful human beings working at this place. If you want to be treated like you deserve to be treated avoid this establishment

Saw several locations before finally stopping in this one, my curiosity piqued by their advertising…read moreof being THE spot to get a "proper burger." Spoiler alert, they are overpriced and need improvement, as do the shakes. The burgers at the pub across the street are probably a better bet, unfortunately. Burger was received as ordered, double-stack. Their house beer cheese is tasty and the beef is flavorful and juicy. However, the patties are poorly formed, largely unseasoned, and small (6oz, hence the double). Mixed feelings on this but a burger shouldn't be domed in the middle nor should it be without basic seasoning unless it really is superior quality. And even then! We also ordered a freakshake, something they're known for. Our server said they were out of multiple ingredients to make it, so we switched to an alcoholic shake (Reeses with a shot of rum, as advertised). We received a thin, icy concoction that didn't taste much like peanut butter, along with a separate shot to be mixed in ourselves, making the consistency even thinner. Oh, and they charged us more by billing separately for the shot. Two thumbs down, zero effort.

Getting back from Southampton late after being at a game, we were hungry and needed a quick bite…read more That can be hard to come by in the Earl's Court neighborhood. Thankfully Byron was still open and able to seat us. My husband and I both had the Byron burger with a beer and my niece indulges in the brownie sundae. The bacon was thick, the cheddar was plentiful and the Byron sauce added a nice layer of flavor but didn't overwhelm the burger. Our waitress was attentive but not hovering and pleasant to have. The food was simple and tasty. Nothing super fancy, but hit the spot at this late hour. Great local chain that reminded me of some of the local chains back home. Simple, good food. No fuss, but grills a good burger.