London’s hidden bars are discrete enough to feel like you have happened upon something special. Some are tucked behind unmarked doors, others buried beneath theatres, within department stores or, in one instance, inside a former government building.
From subterranean speakeasies and late-night jazz dens to cocktail vaults and underground vinyl lounges, these are addresses where the pavements may be buzzing above, but the real party is happening just out of sight. Perfect for ‘cosy’ winter months (we’re being polite about the weather), this is our guide to some of London’s best-kept drinking secrets.
Zum Barbarossa: A Parisian-Style Hideaway Beneath Soho
Beneath a Grade II-listed Georgian townhouse on Dean Street, Zum Barbarossa hides behind historic arches and a discreet descent from the street above. The room has an intimate, Parisian feel, and is a spot where, thanks to the live DJs, the energy lifts as the night unfolds. An Amsterdam import from the family behind The Seafood Bar, the cocktail menu is designed to appeal to a range of palates rather than chase trends. House signatures include a Hot Honey Highball, Banana & Pineapple Daiquiri and, a personal favourite, the Rose Lychee Martini. A short list of small plates is available too, for those who don’t want to disrupt the flow of the evening by seeking out food elsewhere. An easy choice for an intimate date, or a place to head to with friends to party late into the evening.
3'6: Culture And Cocktails At An Iconic Store
I only discovered this bar recently, hidden in plain sight inside one of London’s most iconic stores – it never occurred to me to look for it, and I have regrets I didn’t find it sooner. Located on the third floor of Fortnum & Mason’s Piccadilly flagship store, 3’6 Bar is a great spot to visit for a martini post a hard day’s shopping. Redesigned in 2023 in collaboration with the French architect Arthur Mamou-Mani, the room doubles as an ever-evolving exhibition setting, with works by leading photographers and visual artists rotating throughout the year. In the afternoon or early evening, your drinks experience is accompanied by live music, which further adds to its appeal. Cocktails lean classic, service is unhurried, and the whole place carries the same understated elegance the store itself is known for.
Seed Library: Mr. Lyan's Subterranean Shoreditch Playground
Below street level at One Hundred Shoreditch, Seed Library offers a warm counterpoint to the neighbourhood’s more frenetic pace; it feels like stepping into a familiar, comfortable environment, but one designed firmly for a good time. Custom-made furniture in rich orange and red tones is paired with low lighting, creating a sense of intimacy. Seed Library is cosy yet confident, the sort of place where you settle in quickly and stay longer than planned. Created by multi-award-winning and industry-leading Ryan Chetiyawardana, also known as Mr Lyan, the cocktail programme explores a wide range of flavours – taking inspiration from a specific ingredient, technique or origin story, reimagining how flavours might have evolved along a different route. The result is inventive, and accessible, and a vinyl collection plus rotating DJs provide the eclectic soundtrack. Seed Library has also recently opened to significant buzz in New York, but the original London outpost remains the one to know.
Below Stone Nest: The Boxer Brothers' Soho Haunt
With a pedigree that between them includes Brunswick House, Frank’s, Dove and The Camberwell Arms, you know that this late-night spot from brothers Frank and Jackson Boxer will show you a good time before you even step through the door. Tucked beneath Stone Nest, a former chapel turned contemporary arts space, the venue is designed in the guise of a modern dive bar and has quietly become one of Soho’s most dependable after-hours addresses. The drinks list celebrates the simple pleasure of highballs, with bright, refreshing serves poured alongside classics. Ranch Water, Russian Spring Punch and Peach Rickey remain favourites, while newer additions such as a Champagne Colada or coffee-laced Café Citron introduce a more playful edge. With Jackson in charge of the menu, the food is above the standard of any dive bar; dishes are designed to be eaten standing, with one hand free for a drink, think flatbreads with roasted peppers and anchovy, skewers of togarashi-spiced chicken or pork with pickles. Weekly jazz sessions draw some of London’s most exciting players, meaning that you’re partying away underground while the pavements of Soho buzz overhead.
The Spy Bar at Raffles: Cocktails At London’s Most Secretive Address
Located deep within the former Old War Office on Whitehall, the Spy Bar at Raffles London trades unapologetically on its espionage past. Accessed via what was once a guard room, the bar occupies two subterranean vaults that in the early 20th century were known simply as Rooms 006 and 007 – secure storage spaces for MI5 and MI6 mission files and identity papers. The sense of secrecy lingers. There’s a strict no-photos policy and a quietly theatrical descent that makes arrival feel part of the experience. Inside, leather seating, low light and brass accents create a glamorous mood. The cocktail list, curated by bar manager Sotiris Konomi, takes inspiration from the building’s intelligence heritage. Drinks are classic-leaning but playful, such as the MiV(ice) Americano – a refined twist combining Miami Vice nostalgia with Italian aperitivo structure. DJ sessions spanning funk, soul and rock soundtrack the evenings, bringing a relaxed rhythm to the room as the night unfolds. And, while the bar’s history is rooted in secrecy and seriousness, today it’s very much a place designed for decadence.
Soma 2.0 Canary Wharf: India-Inspired Cocktails Beneath The DLR
SOMA Soho has long been my default rendezvous spot for late-night cocktails, but its younger sibling in Canary Wharf is another spot that no cocktail lover should be sleeping on. Opened a couple of years ago beneath the DLR lines on North Dock, SOMA Canary Wharf pitches itself as the Wharf’s best-kept secret and it is easy to see why. Part of the Kricket restaurant family, SOMA brings the group’s Indian lens to the world of cocktails. The name comes from the Sanskrit word ‘soma’, meaning to distil and extract – a philosophy reflected in menus that reimagine classic drinks through ingredients and flavour profiles drawn from the Indian subcontinent. Fans of the original Soho bar will recognise the same familiar energy and design cues, but Canary Wharf has its own distinct identity. The cocktail list also differs, changing seasonally and with off-menu creations alongside core signatures, ensuring repeat visits are rewarded.
Noodle & Beer Rouge Lounge: A Spicy Red Hideaway In Chinatown
Noodle & Beer is already a lively Chinatown fixture upstairs, but did you know about Rouge Lounge, their underground bar? Open until 4am on Thursdays, Fridays and Saturdays – surprisingly late night by Soho standards – this is where to head when you want to keep the party going, or for a classier late-night munchie than nearby takeaways might offer. Arrive after a West End show or post dinner and you can also take advantage of the reverse happy hour from 10pm to midnight, with two-for-one offers on their classic cocktails. Cocktails are bold and lean into their Asian roots. Signature serves such as the SOUR Lush Desir and the Velvet Heat Whisky Highball with pu’er-infused coconut notes mirror the kitchen’s love of spice. A curated beer list stands up well to Sichuan heat, while small plates of crispy beef jerky, spring rolls and the aptly named ‘mouth-watering chicken’ help keep your energy up long past midnight. But be warned they like their food with a kick here, more sensitive palettes might want to ask them to turn down the heat.
The Libertine: Tippling In The City's Historic Vaults
Tucked away beneath the grandeur of The Royal Exchange, The Libertine occupies a former banking vault where heavy doors, polished decor and quiet opulence deliver a distinctly City mood. In the Exchange’s early days, merchants and traders once gathered below ground for boisterous post-deal ‘tippling’ and today the venue aims to give more than a passing nod to its historical revelries. By day, it’s well known for indulgent dining and a cult-followed Sunday roast, but it’s also a great spot to slip into for a cocktail at the bar. Drinks are served with unhurried polish, and the venue strikes that rare balance of a bustling atmosphere while also being discrete enough for conversations best had away from the open floor of the City.
Lead image: Noodles&Beer
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