Book Your Table
Step into a night of 1940s-inspired celebration at Cahoots Postal Office
For groups of 13+, please contact our team of Cahoots Scoundrels by picking up the ‘dog and bone’ and dialling 020 7352 6200 or typing a telegram to
A Unique Birthday Venue in Borough
Hidden behind a seemingly unassuming postal office shopfront in Borough Yards, just moments from Borough Market, you and your guests are transported into a lively 1940s world of post-war London. Vintage mail carts, stacked parcels and secret dispatches set the scene for a celebration unlike any other, making Cahoots Postal Office a standout birthday cocktail bar in London and one of the most distinctive birthday party venues in London.
Set within a converted railway arch, this immersive cocktail bar in central London buzzes with swing-era energy, where drinks arrive in playful fashion and every corner invites discovery. Whether you’re planning an intimate birthday gathering or a larger celebration, the space offers flexible options to suit every occasion. With semi-private areas and full venue hire available, Cahoots Postal Office is a standout choice for birthday venue hire in London, combining theatrical design with a lively, social atmosphere. The result is an unforgettable experience where every detail transports you and your guests into another era.
Birthday Party Packages & Group Bookings
Whether you’re planning an intimate gathering or a larger celebration, Cahoots Postal Office offers flexible options to suit a range of group sizes. Set across multiple levels within Borough Yards, the space unfolds through characterful corners and tucked-away areas, allowing you to move from reserved tables for smaller groups to semi-private spaces that feel more exclusive while still connected to the energy of the venue.
For bigger occasions, larger group bookings and exclusive hire are available, with room for up to 120 guests across both floors. Layouts can be tailored to suit your plans, whether you prefer a seated setup or a more relaxed standing reception, giving you the freedom to shape the flow of your celebration. Versatile yet distinctive, it’s a seamless choice for birthday party venue hire in London, where the setting brings a sense of occasion without ever feeling overdone.
1940s Cocktails & Celebration Extras
At Cahoots Postal Office, the drinks menu is shaped by the rhythm and intrigue of a 1940s mail depot, where every order feels like a special delivery. Cocktails are assembled, stamped and dispatched by the Scoundrels behind the bar, blending post-war resourcefulness with inventive takes on classic serves, each one arriving with character, precision and a touch of mischief. Expect a line-up of black market cocktails and reimagined favourites, where familiar flavours are rerouted through unexpected combinations and quietly “acquired” ingredients. Signature serves like Signed, Sealed, Delivered and Par Avion bring the theme to life, while themed menus and pre-order options make it easy to plan ahead for group celebrations at this standout birthday cocktail bar in London.
Adding to the theatre, drinks don’t simply arrive, they’re dispatched through a repurposed pneumatic system, whizzing overhead before landing at your table with perfectly timed flair. Served in everything from tin cups to hip flasks and characterful keepsakes, the menu balances nostalgic touches with bolder, more expressive flavours. The result is a drinks experience that feels playful yet considered, where every detail is designed to surprise, and nothing is ever done by halves.
Atmosphere & Immersive Interior
Step through a discreet postal office shopfront and into a fully realised 1940s world, where Cahoots Postal Office transforms a railway arch in Borough Yards into a characterful post-war mail depot. Vintage props, overflowing parcels and repurposed mail carts create a richly detailed setting that makes it a truly unique birthday venue in London.
The space leans into a playful, speakeasy-style energy, with hidden entry points, in-character “posties” and a sense of discovery woven throughout. Split across multiple levels, it reveals tucked-away corners and striking backdrops at every turn, ideal for those looking for a memorable birthday cocktail bar in London. Upstairs, the “Dead Letter Depot” adds another layer of intrigue, filled with undelivered mail and eclectic finds, while interactive touches and swing-era sounds bring the setting to life. Immersive yet lively, it’s an environment designed to elevate any celebration without ever feeling overdone.
Planning Your Birthday at Cahoots
Planning your celebration at Cahoots Postal Office is simple and straightforward. To get started, you can enquire or reserve directly through the website, whether you’re looking to book a bar for a birthday or secure a space for a group celebration. For the best availability, especially for weekend dates it’s recommended to book in advance, as this popular birthday party venue in London fills up quickly.
Larger groups and exclusive hire enquiries benefit from early planning to ensure your preferred space and timing. Depending on your booking, minimum spend requirements may apply, particularly for semi-private areas or full venue hire. These are confirmed during the enquiry process, giving you a clear understanding before you book. If you’re ready to plan your birthday venue hire in London, simply submit an enquiry and the team will guide you through the next steps to secure your date.
Frequently Asked Questions
What is your age policy?
Despite the many young train enthusiasts, we maintain a strictly 21 and over policy at Cahoots Postal Office in Borough.
Is Cahoots Postal Office wheelchair accessible?
The ground floor is fully accessible for wheelchair users, and there’s an accessible bathroom to boot.
How do I book for a big group?
We welcome bookings of up to 12 scoundrels online! For groups of 13 or more, please contact our team of Cahoots Scoundrels:
Are you suitable for birthdays/special occasions?
Birthdays, anniversaries or a celebratory excuse that needs no explanation are always welcome underground. Simply tip off the Scoundrels in the booking notes and they’ll see to it that the occasion doesn’t go unnoticed. A discreet flourish may appear tableside – and, if fortune smiles, a handwritten birthday card from The Captain himself could even make its way to your table…
Please note: The Scoundrels are not able to accommodate any hen or stag parties.
Do you sell gift vouchers?
Whether a Christmas, birthday or wedding gift, a voucher or experience from Cahoots will be right on the pea shooter (the hooter… the nose!). These can be purchased online.
What should I wear?
The Captain is always in favour of 1940s garbs (which he may even reward), although any well-presented Scoundrel is more than welcome.