3 Hanover Square

3 Hanover Square operates as Unit London's gallery by day and a private events space by night — a dual identity that gives it something most Mayfair venues can't offer. The contemporary art on the walls isn't decoration selected to be inoffensive. It's a curated exhibition programme that rotates throughout the year, meaning every event has a visual backdrop that no amount of theming could replicate.

The Gallery Spaces at 3 Hanover Square

Two floors of post-industrial architecture with premium finishes spread across 6,500 square feet. The ground-floor Main Gallery features vaulted ceilings, natural daylight, Venetian plaster walls, and a mirror-finished black concrete floor — plus a transparent glass platform that connects visually to the Lower Gallery beneath. The basement space offers a more intimate character with white walls and reclaimed parquet flooring. Together, the venue handles up to 420 standing guests; individually, each floor operates independently with its own kitchen and back-of-house facilities.

Production and Flexibility at 3 Hanover Square

The technical specification goes well beyond typical gallery hire. A six-metre LED screen, 32-speaker audio system, track lighting, and multiple rigging points support everything from brand activations and fashion shows to immersive experiences and large-scale launches. Dry hire with an approved caterer list gives clients control over the dining proposition. The licence runs to 1am with extensions available.

Mayfair Address, Oxford Circus Access

The W1S postcode on Hanover Square carries weight for corporate entertaining, luxury brand events, and occasions where the setting needs to communicate something beyond capacity and catering. Oxford Circus station — Victoria, Bakerloo, and Central lines — is three to five minutes' walk. For product launches, press days, and gallery dinners, the combination of genuine cultural credibility, serious production capability, and a prime Mayfair address is a difficult proposition to match.