No.11 Cavendish Square

Twenty event spaces across four floors of a Grade II listed Georgian townhouse — and a genuine private courtyard in the middle of Mayfair. No.11 Cavendish Square is one of those London venues that shouldn't quite work: period architecture housing conference-grade AV, a glass-vaulted conservatory opening onto walled gardens, and a pillar-free theatre buried in the basement. But it does, and the range is what makes it unusual.

Georgian Character Meets Contemporary Infrastructure at No.11 Cavendish Square

The building's original proportions — high ceilings, tall windows, Palladian facade overlooking the square — create natural elegance in the heritage rooms. The President's Room seats 24 around a fixed boardroom table with acoustic glazing and views across Cavendish Square. The Garden Room, lined with floor-to-ceiling bookcases and 18th-century 'Adam's Eden' wallpaper, holds up to 100. These spaces suit private dinners and intimate board-level meetings where the setting does decorative work that hired furniture never quite achieves.

The contemporary wing takes a different approach entirely. The Burdett Suite operates as a self-contained ground-floor event space with its own Dean's Mews entrance, configurable staging, and LED lighting capable of brand-colour matching. Below it, the Maynard Theatre seats 282 in pillar-free comfort with HD cameras and live streaming capability built in. Both come with dedicated AV technicians as standard.

Indoor-Outdoor Events in No.11's Orangery and Courtyard

The Orangery is what draws most evening and celebration bookings. A modern conservatory with a magnificent glass vaulted ceiling, it opens through sliding glass doors onto the private courtyard — a walled garden with a living wall that shifts from vivid colour in summer to deep green in winter, a central water feature, and bespoke lighting threaded through the planting. Together they handle 300 standing for receptions or 144 seated for wedding breakfasts, with the kind of indoor-outdoor flow that W1 venues almost never offer.

Practical Details at No.11 Cavendish Square

Searcys handles all catering in-house with seasonal British menus — no external caterers, but the partnership brings award-winning food service across every format from working lunches to black-tie dinners. The venue holds AIM Gold accreditation and offers a 20% discount for health and social care organisations through its connection to The King's Fund. Oxford Circus sits 400 yards south, Bond Street a similar distance west. For events that need heritage and technology in the same building — or a courtyard garden within walking distance of Oxford Street — No.11 Cavendish Square is a genuinely rare combination.