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London Marriott Hotel Grosvenor Square

London Marriott Hotel Grosvenor Square

London Marriott Hotel Grosvenor Square

4.1
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897 Reviews
Ratings are compiled based on customer ratings provided in satisfaction surveys after guests have completed their stay.
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+44 20-74931232
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DATES (1 NIGHT) NIGHTS)
Fri, May 23 Sat, May 24 Flexible in May 2025
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Fri, May 23-Sat, May 24
Number of Nights
1
Rooms & Guests
Maximum 8 guests per room
Rooms
(Max: 3 Rooms/person)
1
Adults
(Max: 8 total guests/room)
1
Children
(Max: 8 total guests/room)
0
AGE OF CHILDREN (REQUIRED)
Special Rates
  • ballroom set up for wedding banquet

Bespoke Venues Near London’s West End

Events

Whether you’re organizing a corporate event, hosting an awards dinner or planning your perfect wedding, The London Marriott Grosvenor Square is the perfect backdrop for any occasion. From intimate gatherings... See More to large-scale events, our venue offers elegance and flexibility to suit any occasion. Our dedicated events team is committed to ensuring every detail is perfect, with customizable packages that reflect your style and needs. Every little detail matters and our expert team will ensure that these are looked after so you can enjoy your special day to the fullest. See Less

Special Group Rates Available
If you have a group booking requiring 10 rooms or more per night, please call us on 0207 493 1232 to discuss how we can offer specially discounted rates.

11

Event Rooms

16297 SQ FT

Total Event Space

900

Capacity Largest Space

12

Breakout Rooms
Capacity Chart | Floor Plans | Equipment and Services

Start Planning Your Meetings or Events Here

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

Start Your Plan Here
Elevate your next event!
Whether you’re planning a large event or a small team get-together, London Marriot Grosvenor Square has the ultimate space for you! Contact us at grosvenorsquare.events@marriotthotels.co.uk
ballroom set up with rows of chairs

Meetings and Events

Host events of any size in the heart of Mayfair, from board meetings to conferences.

Learn More
Civil ceremonies, private dining venue, Ballroom and Wedding reception packages
Seat 900 conference attendees in our elegantly designed Westminster Ballroom here in Mayfair
Take a look at our prestigious Westminster Ballroom, Whitehall Suite & Mayfair Suite here 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

Virtual Tour

Explore our prestigious Westminster Ballroom, Whitehall Suite, and Mayfair Suite through our virtual tour. Discover a range of event layouts and walk through the spaces to see how each can be customized for your needs. Whether you’re planning a grand celebration, a corporate gathering, or an intimate meeting, our event spaces offer the perfect setting to bring your vision to life.

View Tour
Westminster Ballroom
Celebrate your big day with us
Relax in the tranquility of your complimentary Bridal Suite at the hotel after a full day of festivities!
Learn More
round tables with chairs, wreaths, and flowers

Weddings and Occasions

Plan your perfect day in our classic Westminster Ballroom with onsite accommodations.

Learn More
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
As a licensed civil ceremony venue we can host your full Big Day celebrations.
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.

Say ‘I Do’ in the Heart of Mayfair

Celebrate your wedding in the heart of Mayfair, with its spacious, pillar-free design. Our Westminster ballroom provides the perfect setting for a grand celebration. Fully customizable, the ballroom provides dedicated spaces for your ceremony, reception, dinner, and dancing. With our expert team by your side, every detail will be flawlessly executed, ensuring your wedding day is as memorable as your... See More love story. See Less

Westminster Ballroom - Nuptial Gathering

The Westminster Ballroom

Our elegant Westminster Ballroom is a spacious, pillar-free venue designed for seamless events. With an impressive 12.8 ft (3.9 m) ceiling height, it easily accommodates stages, large screens, and dynamic setups—perfect for awards ceremonies, conferences, weddings and gala dinners. Flooded with natural light, the space offers a flexible partition for customized layouts, while the adjacent Whitehall... See More Suite serves as an ideal reception area. See Less

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Ballroom Christmas

A Memorable Feast for Every Occasion

Our menus are carefully crafted using fresh, sustainably sourced ingredients whenever possible, with a focus on minimizing waste. Some dishes are designed to use every part of the ingredients, achieving zero waste. Our Executive Chef blends his classical French and European training with global culinary influences, creating a vibrant and innovative dining experience for events, weddings, and conferences... See More in Mayfair. See Less

Triple Cooked Chips

Host Events With a Purpose

We are enhancing our commitment to supporting customers on their sustainability journey. Through innovative and flexible meeting and event solutions, we provide estimated impact metrics for your event and the option to offset its carbon footprint. Choosing Marriott means more than just a venue—it’s an opportunity to contribute to a more sustainable future. With a detailed Meeting Impact Report and... See More the ability to select a climate action project to support, your event can be both extraordinary and climate-conscious. See Less

Learn More
Grosvenor Square View
Feet Meters
Meeting Room Dimensions (LxWxH) Area (sq.ft) Theater Schoolroom Conference U-Shape Reception Banquet
Westminster Ballroom 116.5x70.5x12.8 8213.3 900 384 360 140 900 580
Belgrave Room 45.9x70.5x12.8 3235.95 300 120 120 70 250 140
Chester Room 33.8x70.5x12.8 2382.9 120 84 84 70 180 90
Eaton Room 36.1x70.5x12.8 2545.05 160 96 80 80 200 130
Belgrave/Chester 79.7x70.5x12.8 2618.7 480 288 280 110 600 312
Chester/Eaton 69.9x70.5x12.8 4929.8 390 216 240 80 450 250
Whitehall Suite 101.4x19.7x7.2 1997.58 0 0 0 0 558 90
St James/Hanover 65.6x16.4x7.2 1076.8 95 65 15 38 160 80
St James 27.9x16.4x7.2 457.56 36 24 16 16 40 24
Hanover 37.7x16.4x7.2 618.28 54 36 24 18 80 36
The Berkeley Suite 35.8x17.4x7.2 622.92 60 30 24 16 100 26
Mayfair Suite 95.1x23.3x6.6 2215.83 140 80 72 70 170 120
Mayfair 1 23.3x23.3x6.6 542.89 35 20 18 18 40 30
Mayfair 2 23.3x23.3x6.6 542.89 35 20 18 18 40 30
Mayfair 3 23.3x23.3x6.6 542.89 35 20 18 18 40 30
Mayfair 4 23.3x23.3x6.6 542.89 35 20 18 18 40 30
Mayfair 1/2 45.6x23.3x6.6 100.8 70 40 36 36 80 60
Mayfair 1/2/3 69.9x23.3x6.6 151.2 105 60 54 54 120 90
Mayfair 3/4 93.2x23.3x6.6 201.6 70 40 36 36 80 60
Westminster Ballroom
Dimensions (LxWxH)
116.5x70.5x12.8
Area (sq.ft)
8213.3
Theater
900
Schoolroom
384
Conference
360
U-Shape
140
Reception
900
Banquet
580
Belgrave Room
Dimensions (LxWxH)
45.9x70.5x12.8
Area (sq.ft)
3235.95
Theater
300
Schoolroom
120
Conference
120
U-Shape
70
Reception
250
Banquet
140
Chester Room
Dimensions (LxWxH)
33.8x70.5x12.8
Area (sq.ft)
2382.9
Theater
120
Schoolroom
84
Conference
84
U-Shape
70
Reception
180
Banquet
90
Eaton Room
Dimensions (LxWxH)
36.1x70.5x12.8
Area (sq.ft)
2545.05
Theater
160
Schoolroom
96
Conference
80
U-Shape
80
Reception
200
Banquet
130
Belgrave/Chester
Dimensions (LxWxH)
79.7x70.5x12.8
Area (sq.ft)
2618.7
Theater
480
Schoolroom
288
Conference
280
U-Shape
110
Reception
600
Banquet
312
Chester/Eaton
Dimensions (LxWxH)
69.9x70.5x12.8
Area (sq.ft)
4929.8
Theater
390
Schoolroom
216
Conference
240
U-Shape
80
Reception
450
Banquet
250
Whitehall Suite
Dimensions (LxWxH)
101.4x19.7x7.2
Area (sq.ft)
1997.58
Theater
0
Schoolroom
0
Conference
0
U-Shape
0
Reception
558
Banquet
90
St James/Hanover
Dimensions (LxWxH)
65.6x16.4x7.2
Area (sq.ft)
1076.8
Theater
95
Schoolroom
65
Conference
15
U-Shape
38
Reception
160
Banquet
80
St James
Dimensions (LxWxH)
27.9x16.4x7.2
Area (sq.ft)
457.56
Theater
36
Schoolroom
24
Conference
16
U-Shape
16
Reception
40
Banquet
24
Hanover
Dimensions (LxWxH)
37.7x16.4x7.2
Area (sq.ft)
618.28
Theater
54
Schoolroom
36
Conference
24
U-Shape
18
Reception
80
Banquet
36
The Berkeley Suite
Dimensions (LxWxH)
35.8x17.4x7.2
Area (sq.ft)
622.92
Theater
60
Schoolroom
30
Conference
24
U-Shape
16
Reception
100
Banquet
26
Mayfair Suite
Dimensions (LxWxH)
95.1x23.3x6.6
Area (sq.ft)
2215.83
Theater
140
Schoolroom
80
Conference
72
U-Shape
70
Reception
170
Banquet
120
Mayfair 1
Dimensions (LxWxH)
23.3x23.3x6.6
Area (sq.ft)
542.89
Theater
35
Schoolroom
20
Conference
18
U-Shape
18
Reception
40
Banquet
30
Mayfair 2
Dimensions (LxWxH)
23.3x23.3x6.6
Area (sq.ft)
542.89
Theater
35
Schoolroom
20
Conference
18
U-Shape
18
Reception
40
Banquet
30
Mayfair 3
Dimensions (LxWxH)
23.3x23.3x6.6
Area (sq.ft)
542.89
Theater
35
Schoolroom
20
Conference
18
U-Shape
18
Reception
40
Banquet
30
Mayfair 4
Dimensions (LxWxH)
23.3x23.3x6.6
Area (sq.ft)
542.89
Theater
35
Schoolroom
20
Conference
18
U-Shape
18
Reception
40
Banquet
30
Mayfair 1/2
Dimensions (LxWxH)
45.6x23.3x6.6
Area (sq.ft)
100.8
Theater
70
Schoolroom
40
Conference
36
U-Shape
36
Reception
80
Banquet
60
Mayfair 1/2/3
Dimensions (LxWxH)
69.9x23.3x6.6
Area (sq.ft)
151.2
Theater
105
Schoolroom
60
Conference
54
U-Shape
54
Reception
120
Banquet
90
Mayfair 3/4
Dimensions (LxWxH)
93.2x23.3x6.6
Area (sq.ft)
201.6
Theater
70
Schoolroom
40
Conference
36
U-Shape
36
Reception
80
Banquet
60
Meeting Room Dimensions (LxWxH) Area (sq.mt) Theater Schoolroom Conference U-Shape Reception Banquet
Westminster Ballroom 35.5x21.5x3.9 763 900 384 360 140 900 580
Belgrave Room 14x21.5x3.9 300.6 300 120 120 70 250 140
Chester Room 10.3x21.5x3.9 221.4 120 84 84 70 180 90
Eaton Room 11x21.5x3.9 236.4 160 96 80 80 200 130
Belgrave/Chester 24.3x21.5x3.9 243.3 480 288 280 110 600 312
Chester/Eaton 21.3x21.5x3.9 458 390 216 240 80 450 250
Whitehall Suite 30.9x6x2.2 185.6 0 0 0 0 558 90
St James/Hanover 20x5x2.2 100 95 65 15 38 160 80
St James 8.5x5x2.2 42.5 36 24 16 16 40 24
Hanover 11.5x5x2.2 57.4 54 36 24 18 80 36
The Berkeley Suite 10.9x5.3x2.2 57.9 60 30 24 16 100 26
Mayfair Suite 29x7.1x2 205.9 140 80 72 70 170 120
Mayfair 1 7.1x7.1x2 50.4 35 20 18 18 40 30
Mayfair 2 7.1x7.1x2 50.4 35 20 18 18 40 30
Mayfair 3 7.1x7.1x2 50.4 35 20 18 18 40 30
Mayfair 4 7.1x7.1x2 50.4 35 20 18 18 40 30
Mayfair 1/2 13.9x7.1x2 9.4 70 40 36 36 80 60
Mayfair 1/2/3 21.3x7.1x2 14 105 60 54 54 120 90
Mayfair 3/4 28.4x7.1x2 18.7 70 40 36 36 80 60
Westminster Ballroom
Dimensions (LxWxH)
35.5x21.5x3.9
Area (sq.mt)
763
Theater
900
Schoolroom
384
Conference
360
U-Shape
140
Reception
900
Banquet
580
Belgrave Room
Dimensions (LxWxH)
14x21.5x3.9
Area (sq.mt)
300.6
Theater
300
Schoolroom
120
Conference
120
U-Shape
70
Reception
250
Banquet
140
Chester Room
Dimensions (LxWxH)
10.3x21.5x3.9
Area (sq.mt)
221.4
Theater
120
Schoolroom
84
Conference
84
U-Shape
70
Reception
180
Banquet
90
Eaton Room
Dimensions (LxWxH)
11x21.5x3.9
Area (sq.mt)
236.4
Theater
160
Schoolroom
96
Conference
80
U-Shape
80
Reception
200
Banquet
130
Belgrave/Chester
Dimensions (LxWxH)
24.3x21.5x3.9
Area (sq.mt)
243.3
Theater
480
Schoolroom
288
Conference
280
U-Shape
110
Reception
600
Banquet
312
Chester/Eaton
Dimensions (LxWxH)
21.3x21.5x3.9
Area (sq.mt)
458
Theater
390
Schoolroom
216
Conference
240
U-Shape
80
Reception
450
Banquet
250
Whitehall Suite
Dimensions (LxWxH)
30.9x6x2.2
Area (sq.mt)
185.6
Theater
0
Schoolroom
0
Conference
0
U-Shape
0
Reception
558
Banquet
90
St James/Hanover
Dimensions (LxWxH)
20x5x2.2
Area (sq.mt)
100
Theater
95
Schoolroom
65
Conference
15
U-Shape
38
Reception
160
Banquet
80
St James
Dimensions (LxWxH)
8.5x5x2.2
Area (sq.mt)
42.5
Theater
36
Schoolroom
24
Conference
16
U-Shape
16
Reception
40
Banquet
24
Hanover
Dimensions (LxWxH)
11.5x5x2.2
Area (sq.mt)
57.4
Theater
54
Schoolroom
36
Conference
24
U-Shape
18
Reception
80
Banquet
36
The Berkeley Suite
Dimensions (LxWxH)
10.9x5.3x2.2
Area (sq.mt)
57.9
Theater
60
Schoolroom
30
Conference
24
U-Shape
16
Reception
100
Banquet
26
Mayfair Suite
Dimensions (LxWxH)
29x7.1x2
Area (sq.mt)
205.9
Theater
140
Schoolroom
80
Conference
72
U-Shape
70
Reception
170
Banquet
120
Mayfair 1
Dimensions (LxWxH)
7.1x7.1x2
Area (sq.mt)
50.4
Theater
35
Schoolroom
20
Conference
18
U-Shape
18
Reception
40
Banquet
30
Mayfair 2
Dimensions (LxWxH)
7.1x7.1x2
Area (sq.mt)
50.4
Theater
35
Schoolroom
20
Conference
18
U-Shape
18
Reception
40
Banquet
30
Mayfair 3
Dimensions (LxWxH)
7.1x7.1x2
Area (sq.mt)
50.4
Theater
35
Schoolroom
20
Conference
18
U-Shape
18
Reception
40
Banquet
30
Mayfair 4
Dimensions (LxWxH)
7.1x7.1x2
Area (sq.mt)
50.4
Theater
35
Schoolroom
20
Conference
18
U-Shape
18
Reception
40
Banquet
30
Mayfair 1/2
Dimensions (LxWxH)
13.9x7.1x2
Area (sq.mt)
9.4
Theater
70
Schoolroom
40
Conference
36
U-Shape
36
Reception
80
Banquet
60
Mayfair 1/2/3
Dimensions (LxWxH)
21.3x7.1x2
Area (sq.mt)
14
Theater
105
Schoolroom
60
Conference
54
U-Shape
54
Reception
120
Banquet
90
Mayfair 3/4
Dimensions (LxWxH)
28.4x7.1x2
Area (sq.mt)
18.7
Theater
70
Schoolroom
40
Conference
36
U-Shape
36
Reception
80
Banquet
60
Banquet
Generally used for meals and sessions involving small group discussions. A five foot round table seats eight people comfortably. A six foot round table seats 10 people comfortably.
Conference and Hollow Square
Appropriate for interactive discussions and note-taking sessions for fewer than 25 people. Many hotels have elegant "boardrooms" for 10 to 20 people, equipped with full audiovisual capabilities, a writing board, cork board and a flip chart.
E-Shape, U-Shape and T-Shape
Appropriate for groups of fewer than 40 people. These are best for interaction with a leader seated at the head of the setup. Audiovisual is usually best set up at the open end of the seating.
Theater
Appropriate for large sessions and short lectures that do not require extensive note-taking. This is a convenient setup to use before breaking into discussion or role-playing groups because chairs can be moved.
Reception
Stand-up social function where beverages and light foods are served. Foods may be presented on small buffet tables or passed by servers. May precede a meal function.
Schoolroom or Classroom
The most desirable setup for medium to large-size lectures. Requires a relatively large room. Tables provide attendees with space for spreading out materials and taking notes.
Ovals and Rounds
Generally used for meals and sessions involving small group discussions. A five foot round table seats eight people comfortably. A six foot round table seats 10 people comfortably.

Audio-Visual Equipment

  • AV Technician
  • Microphone
  • PA System
  • TV
  • Teleconferencing
  • Video Camera
  • Videoconferencing
  • Wireless Internet

Event Services

  • Certified Meeting Planner
  • Registration Service
  • Security Guards

Event Equipment & Supplies

  • Direction Signs
  • Easels
  • Flip Chart & Markers
  • Lobby Bulletin Board
  • Name Cards
  • Pens / Pencils / Notepad
  • Podium Lectern
  • Portable Stage
  • Spotlights
  • Stack Chairs
  • Tables
  • Wall Charts

Business Services

  • Copy Service
  • Overnight Delivery/Pickup
  • Post/Parcel
  • Printers
  • Meeting space capacities and configurations follow social distancing guidelines
  • Offers single serve F+B options
  • Third-party partners comply with MI cleanliness standards

Frequently Asked Questions

London Marriott Hotel Grosvenor Square has 11 event rooms.

The largest capacity event room is the Westminster Ballroom. It has a capacity of 900.

Yes, London Marriott Hotel Grosvenor Square provides wedding services.

To book a meeting or event at London Marriott Hotel Grosvenor Square click here

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