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London Marriott Hotel Grosvenor Square

Business Events & Meetings Overview

Nestled in the heart of Mayfair, our flexible meeting rooms and five-star amenities symbolize our passion to provide you with the personalized attention necessary to create a unique and memorable event. Define your next occasion with the London Marriott Hotel Grosvenor Square.


Request for Proposal

Event Space Details

Representing nearly half of our venue's total event space, the Westminster Ballroom totals 762 square meters (8,216 square feet) and is one of London’s largest pillar-free spaces. The ballroom has the flexibility to break into three separate conference areas to best meet your needs and is just one of 15 meeting rooms available. Whether hosting a reception for up to 1,000 guests or a board meeting for 12, our stylish, high-tech spaces, complimented by intuitive service, will set your occasion apart from the rest.

Meetings and Events Brochure (PDF)

3D Meeting Space Floor Plans (PDF)


Our venue has been honored with numerous awards for customer service over the years, but our most treasured awards come from our customers.

‘The devil is in the detail and the preparedness…’ ‘…the performance of your team was simply outstanding in all aspects’ ‘We look forward to working with you again as opportunities arise.’ -BCD Meeting & Events – New Zealand, October 2015

‘I can say without hesitation that the team at The London Marriott Grosvenor Square is the best I have ever worked with.’ ‘Our brand values are long term partnership with a passion for excellence and customer success.’ ‘The team at Marriott Grosvenor Square could not be better suited to these values…’ -InterSystems, June 2015

Unique Spaces

Add value to the experience of your delegates with our hotel’s unique spaces:

  • The Luggage Room Bar – Our 1920s speakeasy was recently named one of the World’s Best Bars for 2016.
  • Plan a chef’s table experience or enjoy private dining options for up to 40 guests at our maze and maze Grill by Gordon Ramsay
  • Book one of our eight Balcony Suites and enjoy an exclusive cocktail reception within our secret garden.

Contact Us

To create your personalized proposal and check our availability: 

Phone: +44-20-74931232 

Directions and Parking

Our hotel’s main entrance is on Duke Street, just off the northeast corner of Grosvenor Square. The Bond Street Tube Station is within walking distance.

From Heathrow Airport (LHR) take M4 E to Cromwell Rd. Follow through Knightsbridge to Hyde Pk Corner. Around HPC to Park Lane. Turn right down Upper Brook St to Grosvenor Square, left at Duke St.

Valet and off-site parking are available, both at a rate of 60 GBP, daily.