Mary Sumner House
Mary Sumner House has 3 meeting/event spaces for 25–120 delegates (theatre), largest: Main Conference Room (120).
- Up to 120 delegates
- 3 meeting spaces
1 photosPhotography pending verification1 photosCapacity overview
3 spaces · capacities by layout · floor area in m²
| Room | Theatre | Cabaret | Boardroom | Classroom | U-shape | Banquet | Reception | m² |
|---|---|---|---|---|---|---|---|---|
| Main Conference Room | 120 | — | 30 | 60 | 35 | — | — | 80 |
| Committee Room | 40 | — | 18 | 24 | 20 | — | — | 40 |
| Meeting Room 1 | 25 | — | 12 | 16 | 15 | — | — | 25 |
At a glance
Mary Sumner House is a distinguished conference and meeting venue located in the heart of Westminster, just minutes from Westminster Abbey and the Houses of Parliament. This historic building serves as the headquarters of the Mothers' Union and offers a range of flexible meeting spaces suitable for conferences, seminars, and corporate events. The venue features modern audio-visual equipment, catering facilities, and professional event support services. With its prime location and excellent transport links, Mary Sumner House provides an ideal setting for business meetings and events in one of London's most prestigious areas.
Best suited for
- Business Meetings
- Conferences
- Training
- Workshops
- Seminars
Why book with us?
- Independent venue sourcing
- Free to event organisers
- Access to negotiated rates
- Alternative venues included
- Human expert support
Know before you book
Provenance shown for every factMeeting spaces at this venue
Pricing & packages
Exact rates are confirmed on your proposal — our experts negotiate on your behalf.
Meeting room, equipment, lunch & refreshments.
Half day, full day and evening rates available on request.
Bespoke menus and exclusive-use packages for private events.
Food & catering
Dietary options catered for
Top facilities
- Free WiFi
- AV Equipment
- Catering Available
- Air Conditioning
- Accessible
- Reception Area
- Break-out Spaces
AV & production
Accessibility
Always confirm specific access requirements with our team — we check on your behalf.
- Wheelchair accessible
- Step-free access
- Accessible toilets
Location & getting there
24 Tufton Street, London, SW1P 3RB, United Kingdom
Venue Intelligence™
Every rating below is computed from verified platform data — never marketing copy.
Mary Sumner House is a verified conference centre in London, hosting up to 120 guests. Its profile rates most strongly for Corporate, Historic, Hybrid Ready. Verified on-site: wi-fi, av & production, food & catering, accessibility. Best suited to corporate conferences and board meetings.
Best for: corporate conferences and board meetings, memorable events in a heritage setting, hybrid and streamed events.
Sustainability credentials are not yet evidenced in the profile data.
Venue profile ratings
- Corporate★★★★★
- Luxury★★★★★
- Historic★★★★★
- Creative★★★★★
- Eco★★★★★
- Hybrid Ready★★★★★
- Networking★★★★★
- Training★★★★★
- International★★★★★
- Accessibility★★★★★
Verified on-site
- Wi-Fi✓ Verified
- AV & production✓ Verified
- Food & catering✓ Verified
- BedroomsNot listed
- SustainabilityNot listed
- Accessibility✓ Verified
Venue IQ™
A living intelligence record — every entry is generated from verified platform data, not marketing copy.
- Oct 2025Venue verified and listed
Added to the InternationalVenues.com verified directory.
- Oct 2025Photography refreshed — 3 images
Latest venue imagery reviewed and published.
Frequently asked
How many meeting rooms does Mary Sumner House have?
Mary Sumner House has 3 meeting and event spaces in London, seating up to 120 delegates theatre-style in the largest room.
What is the capacity of Mary Sumner House's largest event space?
The largest event space at Mary Sumner House is Main Conference Room, with a maximum capacity of 120 guests.
What conference facilities does Mary Sumner House offer?
Mary Sumner House offers Free WiFi, AV Equipment, Catering Available, Air Conditioning, Projector, Screen, PA System across its 3 meeting and event spaces.
What is the maximum capacity?
Up to 120 guests in theatre style, 80 in classroom style, 40 in boardroom style
What AV equipment is available?
Standard AV equipment including projector, screen, PA system, microphones and high-speed Wi-Fi
Is catering available?
Full catering services available including refreshments, lunch and dinner options
Is there parking available?
Limited on-street parking available, nearest car park 5 minutes walk
About Mary Sumner House
Mary Sumner House is a distinguished conference and meeting venue located in the heart of Westminster, just minutes from Westminster Abbey and the Houses of Parliament. This historic building serves as the headquarters of the Mothers' Union and offers a range of flexible meeting spaces suitable for conferences, seminars, and corporate events. The venue features modern audio-visual equipment, catering facilities, and professional event support services. With its prime location and excellent transport links, Mary Sumner House provides an ideal setting for business meetings and events in one of London's most prestigious areas.
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Photo: Winniepix · CC BY 2.0 via Wikimedia Commons
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