Bath's wildest secret
Hen Do Venue in Bath
Take the bride below, and let the city forget where you went.
A hen party, hidden beneath the city
A Hen Do in Bath, Hidden Beneath the City
Looking for hen do ideas in Bath that go beyond the usual prosecco-and-spa routine? Gather your party at the top of a discreet stairway just off Pulteney Bridge and descend into the candlelit vaults of Opium, Bath's best known secret. Down here, amid taxidermy, flickering candlelight and oxblood velvet, a hen party becomes something theatrical: intimate, a little decadent, and gloriously off the beaten track. It is, quite simply, one of the most memorable hen party activities Bath has to offer.
Whether you're after bespoke craft cocktails, your own private bartender, or a hands-on masterclass for the bride-to-be, we'll shape the night around your group. Two experiences sit at the heart of every Opium hen do, choose one, or weave them together.
Capacity & the small print
I · The Secret Room
The Private Secret Room
Tucked deep within the vaults, our Secret Room seats up to 15 and is yours alone for the evening. You'll have a private bartender pouring all night, a screening facility, and a karaoke machine for the inevitable performances. It's the perfect hen party hideaway, exclusive, candlelit and entirely your own.
Step InsideSome nights are better left off the map.
II · The Masterclass
A Private Cocktail Masterclass
Put the hen behind the bar. In a private masterclass your own bartender guides the group through crafting a selection of our signature cocktails, shaking, stirring and tasting your way through the menu. It's playful, hands-on and ends, naturally, with everyone drinking their own creations. A favourite among bridal parties looking for hen do activities in Bath with a little flair.
Take the BarWhat awaits below
What's Included
Pours all night
Your Own Bartender
A dedicated bartender pouring bespoke cocktails, plus wine, gin and beer, for your group all evening.
Yours alone
A Private Vault
The Secret Room to yourselves, with screening facility and karaoke, an atmospheric corner of the vaults that’s entirely your party’s.
Shaped to suit
A Tailored Night
Masterclass, drinks package or both, we shape the evening around your hen’s tastes and your group size.
Most hen groups number between six and fifteen, which fits the Secret Room beautifully, though smaller parties are warmly welcomed at the main bar too. Curious about the drinks first? Browse our cocktail menu or take a wander through the gallery to see the vaults in their candlelit glory.
Reserve the vault
How to Book Your Hen Do
Booking is simple. Send us your preferred date, the size of your party and which experience tempts you, the Secret Room, a masterclass, or a little of both. We open Monday to Wednesday from 5pm until midnight, and Thursday to Saturday from 5pm until 2am, so there's plenty of room in the evening to make a night of it. Drop your details into the form alongside and we'll descend into the diary to confirm availability.
Whispered questions
Hen Do Questions, Answered
For an intimate, theatrical hen party, Opium Bar takes some beating. Hidden in the vaults beneath Grove Street, it offers a private Secret Room and bespoke cocktail masterclasses with your own bartender, far more memorable than a standard bar crawl, and rated 4.6★ from 505 Google reviews.
The Secret Room seats up to 15 guests, with room for a few more standing. It's the perfect size for a close-knit hen party, your own private space in the vaults, away from the main bar.
Two stand-out hen party activities in Bath: hire the private Secret Room with your own bartender, screening facility and karaoke, or book a private cocktail masterclass where your group learns to mix our signature drinks. Many brides-to-be combine the two.
Send an enquiry below with your date, group size and which experience you'd like, or call 01225 332321. We'll check availability in the vaults and tailor the evening to your group.