
Midwinter, beneath Grove Street
Christmas parties in the dark
the season turns: come below
While Bath strings up its lights, Opium does the opposite. A candlelit cocktail vault dressed for midwinter: spiced serves, crushed velvet, a watchful stag and a party the office will struggle to better. Find the unmarked door, descend, and let December behave badly for once.
Reserve the season
Send word, claim your night
December fills before the first frost. Tell us the date, the number and the manner of mischief, and we will hold a corner of the dark for your party.

spiced, and dressed in evergreen
the midwinter serve
charred citrus, struck warm
smoke and embers
frost on the rim, fire beneath
a toast, twice over
amber, against the cold
the long dark, sweetenedThree ways to misbehave
Bespoke party packages
From a reserved corner for the team to the whole vault behind closed doors. Every festive booking is tailored: tabs, arrival serves, and a night arranged around your particular vices.
Reserved corner of the vault
The Gathering
Hold a candlelit pocket of Opium for your party: a welcome serve in hand, the apothecary close by, and the city above forgotten for the night.
Exclusive festive hire
The Whole Vault
The doors close behind you. The full vault, the stag, the gold and the dark, dressed for midwinter and yours alone for the evening.
Festive masterclass
The Dark Arts
Gather your party around the apothecary to build winter serves under our bartenders, then drink the spoils. A Christmas party with something to show for it.

Said in confidence, the morning after
“we came for one and stayed for the whole december”
office party, twelve strong
“the best christmas do this firm has ever thrown, hidden under a street”
private hire, the full vault
“nobody could find the door and that was the entire point”
a midwinter birthday
The festive ledger
When the dark draws in
Opium keeps its winter doors from late November through to the turn of the year. Weekends vanish first: the earlier you send word, the better the corner we can hold.
- Wednesday to Thursday
- 5pm til late
- Friday & Saturday
- 5pm til 2am
- Sunday
- By arrangement
- December weekends
- Booking advised
