99 Regent Street (Formerly Cuckoo Club) Halloween 2026

99 Regent Street, formerly the Cuckoo Club, is open on Halloween 2026, with both floors running. Halloween falls on Saturday 31 October, and 99 Regent Street opens Wednesday to Saturday, 11pm to 4am, with both floors open on Fridays and Saturdays. So Friday 30 and Saturday 31 October are full two-floor nights in the old Cuckoo Club building, entered from Swallow Street by Piccadilly Circus. No Halloween theme, line-up or ticketed event has been announced, so treat anything advertised as a "Cuckoo Club Halloween party" with caution. We book 99 Regent Street directly: see the 99 Regent Street booking page.

Halloween 2026 at 99 Regent Street at a glance

• Dates: Friday 30 and Saturday 31 October, 11pm to 4am, both floors open.
• Music: open-format hip hop and RnB upstairs, house downstairs.
• Tables: from £600 minimum spend (as of October 2026), covering entry for the whole group. Halloween Saturday can run above the standard minimum; we confirm the figure for your group before you commit.
• Guestlist: by request and open to mixed groups, with entry from free to about £50 depending on the night and arrival time. On Halloween it fills early.
• Age: 19+, a year older than most London doors, with physical photo ID for everyone. There are no exceptions on the night.
• Dress code: elegant and enforced. Costumes must still meet it.

Two floors, one booking

The reason to pick 99 Regent Street for Halloween is the split: upstairs is the main room, open-format hip hop and RnB where most tables sit; downstairs is house, darker and more dance-focused. On a Friday or Saturday both run, so a group that cannot agree on music does not have to. Each floor holds about 200, which keeps both rooms full without the crush of a big-room club.

Who it suits

Groups that want a grown-up, dressed-up Halloween rather than a student costume night: the 19+ door and the elegant dress code shape the crowd. If anyone in your group is 18, this is the wrong venue; Rumour on Dover Street is 18+ and a short walk away.

Halloween at Cuckoo Club in 2025 (history)

This page previously covered the Cuckoo Club Halloween party 2025. In 2025 the club traded as the Cuckoo Club, across two floors, mostly hip-hop and open-format. 99 Regent Street is the Cuckoo founders reunited on the same floor with a new concept, new terms and a new name.

Other Halloween nights nearby

For more options side by side, see the best Halloween clubs in London, The Box Halloween 2026, Maddox Halloween 2026 and Scotch of St James Halloween 2026.

Booking Halloween 2026 in Mayfair: what holds every year

• Book early. Halloween falls on a Saturday this year, the busiest possible combination. The best tables go first, and minimum spends on Saturday 31 October can run above a normal weekend. Our guide to Mayfair table prices explains how minimums work.
• Costumes still meet a dress code. Mayfair doors keep their smart rules on Halloween. A polished themed look gets in; full-face masks, props, replica weapons and casual costumes over trainers are the usual refusals. See the London club dress code guide.
• Arrive by midnight. Doors open at 11pm and queues peak shortly after midnight. Arriving early with a confirmed booking is the easiest night.
• Getting home. The Saturday Night Tube runs on the Piccadilly, Victoria and Jubilee lines through Piccadilly Circus and Green Park. The clocks go back a week earlier, at 2am on Sunday 25 October, so there is no extra hour on Halloween itself.

For the large ticketed Halloween raves outside Mayfair, Time Out keeps a running list of Halloween club nights in London.