Located in the heart of Westminster, Sinfonia Smith Square is one of London’s most striking and characterful event venues. Set within a beautifully restored Grade I-listed former church, the venue combines historic grandeur with modern technical capability, offering a memorable setting for conferences, concerts, receptions and private dining.

Surrounded by some of London’s most iconic landmarks and moments from Westminster, Victoria and St James’s Park, the venue feels distinctly central yet removed from the pace of the city. Its classical architecture, exceptional acoustics and flexible event infrastructure make it particularly well suited to organisations seeking a venue with presence, gravitas and cultural significance.

From high-profile conferences and award ceremonies to elegant evening receptions and seated dinners, Sinfonia Smith Square delivers scale without losing intimacy. The Main Hall is a dramatic, light-filled space with soaring ceilings, original architectural features and renowned acoustics. Purpose-designed for performance but highly adaptable, it supports a wide range of layouts and event formats, enhanced by in-house technical expertise and professional production support.

Beyond the Main Hall, the venue offers a selection of smaller supporting spaces, ideal for breakout sessions, VIP hosting, green rooms, rehearsals or private meetings. This balance of large-scale impact and supporting flexibility allows events to flow seamlessly from plenary sessions to more intimate moments.

Key Features

• Prime Westminster location close to Victoria & Westminster stations

• Grade I-listed historic venue with outstanding architectural character

• Main Hall accommodating up to 500 guests

• Exceptional acoustics and sightlines

• Flexible seating and layout configurations

• In-house technical and production support

• Suitable for conferences, concerts, dinners, awards and receptions

• Step-free access and accessible facilities

• Licensed for events

• Experienced venue team supporting events end-to-end

Event Spaces & Capacities

Main Hall

A dramatic and versatile space at the heart of the venue, featuring original architecture, natural light and world-class acoustics. Ideal for conferences, concerts, gala dinners, award ceremonies and receptions.

• Standing reception: up to 500 guests

• Theatre / concert seating: up to 324 guests

• Seated dining: up to 230 guests

• Cabaret: approx. 120 guests

• Classroom style: up to 300 delegates

Supporting Rooms

A collection of smaller, flexible spaces used for breakout sessions, meetings, artist green rooms, speaker preparation or private hosting. These rooms complement the Main Hall and are typically hired alongside it to support larger events.

(Capacities vary depending on configuration and use.)

Why Hire Sinfonia Smith Square

Sinfonia Smith Square offers something increasingly rare in central London: a venue with genuine character, cultural credibility and technical reliability. Its historic setting creates instant impact, while its experienced team and modern infrastructure ensure events are delivered smoothly and professionally.

For organisations seeking a venue that feels prestigious without being ostentatious — and memorable without being gimmicky — Sinfonia Smith Square is a compelling choice. Whether hosting a landmark conference, a refined private dinner or a standout evening reception, the venue provides a setting that elevates both the event and the brand behind it.