Celebrate your transition into adult life in one of the liveliest and unique venues in London. Head to the Piano Works for an endless night of dancing and singing your heart out to the songs you request in this jumping House of Song. Held in a Victorian basement, the team behind this impressive project wonderfully combine the venue's nostalgic feel with the electric vibe of an incredible concert. Blow the roof off this place to celebrate your 21st birthday in style. 

It's always a fun time party night at Bar Rumba: great themed nights, dressing up and dancing all night. Bar Rumba is a lively and comfy boutique club with lots to offer for anyone looking for a 21st birthday party with a twist.

Celebrate your 21st birthday the best way with Tonight Josephine. With venues in Clapham and Waterloo, these are the perfect spots to let loose and have fun with a cool range of events. Think karaoke shindigs, Beyonce-themed bottomless brunches and musical singalongs.

Spot the trendy crowd out for fun at Zoo bar, a chic and modern club in Soho. You can enjoy a night of fun and frivolity and chart and commercial house music until 3 AM in a very lively atmosphere at this central London bar.

Trapeze will truly offer you a birthday you won't forget. Set in the heart of Shoreditch, it's the ideal place for your 21st birthday with a cool cocktail bar on the first floor and a pumping basement club, this circus themed venue is an incredibly fun night out. With food on offer as well, there's really everything you need in one night.

Picking Dirty Martini as your birthday venue will be music to your friends' ears, as this fun-filled cocktail bar has drinks to suit every taste and budget. Let the master mixologists whip you up some of the city's best drinks as you party well into the night. 

It's the big 2 1, and how are ya gonna celebrate? Make it a special one by heading off to this Silent Sounds Boat Party. This bad boy will cruise you past some of the city's most famous landmarks, as well as offer you a buzzing dancefloor and quality tunes.

Grab your share of the VIP treatment at this Moroccan-inspired party palace. Fez Club's professional staff, awesome sound system and late licence make it the perfect destination if you're celebrating in Putney. Enjoy a few unique cocktails or a glass or two of champers then join a lively crowd on the dance floor until 4 AM at the weekends!

Located in Cricklewood, Zombie Games Cafe is a quirky bar that's full of old-school video games and classic card-trading or boardgames. Try out their retro machines or get stuck into epic Dungeons and Dragons battles, while enjoying signature cocktails, craft beer and tasty snacks like mozzarella sticks or mini margherita pizzas. Even better? They've got karaoke and beer pong here as well.

Fancy throwing an epic 21st bash? Then check out Simmons Holborn. This cool venue is home to two floors, which are perfect for celebrations, including fabulous live DJ sets and a dancefloor. To top it off, there's a five-hour-long happy hour every day, with teapot cocktails galore.

There's no time like the big two-one to get a bit silly, and there's no better place to do it than the Bloomsbury Bowling Lanes. With bowling, karaoke, ping pong, pool and cocktails, it's one of the best bars in London for a 21st birthday.

Looking for a fun place with a little bit of everything? All Star Lanes in Stratford, Holborn, White City and Brick Lane has it sorted. Warm up with a couple of cocktails from the 1950s Americana-inspired bar, before popping over to the bowling arena, where there's no less than 14 lanes. Once you're all done slaying your mates you can patch things up at dinner, where the menu features everything from Dedham Vale burgers to mac 'n' cheese.

Turn back the hands of time for your 21st birthday party, at The Old School Yard. What better way to celebrate your 21st birthday than by remembering your childhood? Reserve an area to enjoy the great cocktails, happy hours and retro arcade games; or liven things up by booking one of the many private karaoke rooms. For a lively and fun filled 21st birthday party in London.

Looking for fun and affordable ways to celebrate the big 2-1 this summer? Hashtag Parties are bringing together a whole host of cheap nights out in Central London across June and July, so get the gang together and prepare to celebrate properly.

Ping pong tables, shot wheels and Scandinavian party vibes all pool together to create one fun-loving 21st birthday party destination at Nordic Bar. You might have to immerse yourself in Nordic traditions by wearing a cone on your head and shouting 'Skaol' before downing your drink but you'll be rewarded with some of the best Scandinavian food and drink, a fun crowd and DJs spinning pumping tunes until the early hours of the morning.

For a 21st birthday, make your way over to one of the award-winning Simmons bars in London from Oxford Circus to Euston Square and beyond, and delight in kitsch decor paired with affordable drinks. If you venture to the former, you'll even find a karaoke booth. And for even cheaper sips? Visit during happy hour to celebrate with 2-4-1 tipples - anytime between 4pm and 9pm, Sunday to Friday. 

Upgrade your 21st birthday plans with The Star In Shoreditch. Not only does this venue offer private hire options for those epic gatherings, but also karaoke nights, live music nights and crackin' DJ sets. Hungry? Check out the food menu.

Strong cocktails, power ballad anthems and fancy dress antics make for one heck of a 21^st birthday; trust us. Get yourself along to London's devoted karaoke bar, where liberating, heart-racing performances are the norm. There's thousands of songs to choose between and you could add a cocktail masterclass to your package for that extra wow-factor.

Undoubtedly one of London's most unique afternoon tea experiences can be enjoyed aboard this vintage Routemaster bus! Take in all of central London's sites on a charming drive around the city, with a spread of sandwiches, pastries, cakes and macaroons to nibble away at. Bring your own bubbly for a £5 corkage fee for that extra sparkle.

Looking for 21st birthday party venues? Hold a bash at South Woodford's Ohana Bar, a vibrant, stylish space offering two rooms to suit your celebration needs. Brainstorm with the team to create an unforgettable night, with a range of bespoke cocktails whipped up by expert mixologists. 

If you're not sure where to celebrate your 21st birthday yet, check out DNA VR. As one of the best virtual reality experiences in the capital with venues in Hammersmith, Battersea and Camden, this is a top choice for special occasions.

If you're after birthday ideas, Bar 161 is a great place to host your celebration. Along with a chic interior and intimate atmosphere, the venue supplies the best cocktails, from blood orange margaritas to martinis and negronis.

Get ready for a roaring 21st birthday party in Central London thanks to the help of Number 1 in London Bridge. Not only can you book private areas for you and your pals, get ready to dance well on into the night thanks to a roster of fun-time DJs.

If you're on the hunt for birthday venues, Four Quarters in Elephant and Castle is a brilliant choice. The space is packed with tonnes of games to play from arcade and pinball machines to classics such as Guitar Hero. Plus, there's food and themed cocktails on offer - the Princess Peach is delish.

This bar is a UFO in the world of Shoreditch clubbing. With a quirky and bold interiors and an eclectic music policy to match, you always spend a night to remember at Gigi's with cracking tunes, good food and delicious drinks aplenty.

For a more unique 21st birthday get onboard West End on the Thames, which will take your party onto the Thames for a backdrop of some incredible views of London. On the top deck of this spacious river boat you can enjoy all the hard-to-beat views of London at night. Mingle amongst the other young, adventurous partiers of London, or hire out the whole party for a private clubbing cruise through the heart of London while admiring the city as you've never seen it before.

Now that you're all grown up, have a sophisticated soiree in the swankiest club in South London at this Clapham club. With three rooms to choose from, get down low in the basement bar, break it down in the main terrace area or class it up in the split level VIP lounge. Regular burlesque performances and even fire-eating will have your heads spinning and eyes bulging, so hit this place up for a birthday to remember.

The Shoreditch is an East London club. It is a restaurant during the day, serves cocktails in the evening and hosts regular DJs into the early hours. The interior is fun mix of Tiki-bar and art deco with flamingos and honey comb wallpaper providing a unique bar setting.

If you've got the search party hunting for something incredibly fun - but a little bit different – this is you all over. It's probably easiest to think of Sounds Familiar as a disco in a pub quiz format, except there's no mundane trivia and the focus is instead on identifying songs and the artists responsible. A wildly fun night where you'll likely end up on the tables, arms around a stranger, belting out the words to one power ballad after another.

Fabric is well situated between Farringdon and Barbican. You can expect to move your body to the rhythm of cutting-edge house, techno, electro, disco, dub-techno and many other music styles mixed by various artists from underground DJ talents to international legends.

There's no better way to celebrate your 21st than by singing at top volume with all your best mates. Karaoke at the pier offers private rooms for hire, alongside an impressive library of over 80,000 songs. What's more, there's an expertly crafted cocktail menu to keep you fuelled.

If you love comedy gigs and clubbing, Bar Rumba has the night for you. Every Saturday night, Bar Rumba holds its Big Night Out Comedy Club. Soak up the happy hour deals before the comedians start the show, then get your dancing shoes on for some late night party action afterwards. Ideal for birthdays or groups of friends looking for something a little different, book online and get your discounted tickets exclusively with DesignMyNight...