Events

Start Planning Your Meetings or Events Here

Book online now for meeting rooms for under 30 people within 90 days

Tell us about your event, then we'll contact you and plan it together

11

Event Rooms

16297 SQ FT

Total Event Space

1000

Capacity Largest Space

12

Breakout Rooms
Conference Special Offer
For all new enquires taking place in March and April, we're offering a reduced Day Delegate Rate. Whether you are hosting a conference, meeting, or special celebration, our team will work to ensure all your needs are met. Contact grosvenorsquare.events@marriotthotels.co.uk or call 020 7493 1232.
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Whitehall Suite

Meeting and Events

Meetings made simple. Made rewarding. Made effortless. We don’t hold meetings - we make them

Select from 10 conference venues and meeting rooms for hire in the heart of London Learn More
Seat 1,000 conference attendees in our elegantly designed Westminster Ballroom here in Mayfair Learn More
The prestigious Westminster Ballroom is Mayfair’s renowned venue for the grandest of events. Learn More
Hire our event venues in Mayfair to benefit from high-speed Wi-Fi access and audiovisual services
Accentuate your event in Mayfair with a delicious meal, courtesy of our excellent catering staff
Win a luxury honeymoon on a private Italian island
You’re marrying the partner of your dreams, and now the honeymoon of your dreams could be yours too. Book and confirm your wedding before 31st March 2022 and be in with a chance of winning your Honeymoon at the JW Marriott Venice, Italy. Terms and conditions apply.
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Westminster Ballroom - Nuptial Gathering

Weddings and Occasions

Located in the Mayfair neighborhood of London, we boast 10 distinguished wedding venue halls

Dream weddings don't just happen, they're planned. Marriott Certified Wedding Planners are trained to help. After completing demanding coursework, each Marriott Certified Wedding Planner is qualified to coordinate weddings of all types, including ethnic and military weddings. Relying on experience, training, tradition and old-fashioned intuition, Marriott Certified Wedding Planners can help you determine an overall vision for your wedding and help you execute each detail. That includes setting an event budget; deciding on a menu; arranging table settings; and finding florists, photographers, a band and other entertainment for the big day.
Say 'I do' in our elegant Westminster Ballroom, one of the largest pillarless venue halls in London Learn More
As a licensed civil ceremony venue we can host your full Big Day celebrations. Learn More
Choose from one of our signature wedding packages with a dedicated Event Manager.
Celebrate any special occasion from intimate dinners to large parties.
Dry Hire packages with an approved external caterer available for all social events.
private dining austin
Rewarding Travel from start to Finish
Earn up to 60,000 points per qualified event with Marriott Bonvoy Events. Elite members earn more with bonus points.

MANAGE YOUR EVENT WITH EASE

Manage event details, make real-time requests and connect with our staff - from the palm of your hand.

Please note: all room sizes are approximate.

Frequently Asked Questions