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Events

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10

Event Rooms

16297 SQ FT

Total Event Space

1000

Capacity Largest Space

12

Breakout Rooms
Capacity Chart | Floor Plans | Equipments and Services
Take a Virtual Tour Around our Event Space
Take your tour beyond the ordinary and discover what we can offer with our virtual showround capability. Bring your event to life and start your planning using suggested layouts to help visualise setups and the ability to explore every part of our exclusive spaces.
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Whitehall Suite

Meeting and Events

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

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Select from 10 conference venues and meeting rooms for hire in the heart of Mayfair
Seat 1,000 conference attendees in our elegantly designed Westminster Ballroom here in Mayfair
The prestigious Westminster Ballroom is Mayfair’s renowned venue for the grandest of events. Learn More
Hire our event venues to benefit from high-speed Wi-Fi access and cutting-edge 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 upscale Mayfair neighborhood of London, we boast 10 newly redesigned wedding 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
Gather with family and close friends for an intimate reception in our sophisticated Mayfair Suite
Licensed for civil ceremonies, we also offer private dining venues and wedding reception packages
Delight your party guests with a delicious, handcrafted meal prepared by our culinary team
You and your wedding party will enjoy our prime setting near major attractions in Mayfair, London
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.
See how we're rewarding events

MANAGE YOUR EVENT WITH EASE

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

Marriott's Meeting Services App

Please note: all room sizes are approximate.

Feet Meters
Meeting Room Dimensions (LxWxH) Area (sq.ft) Theater Schoolroom Conference U-Shape Reception Banquet
Westminster Ballroom 116.5x70.5x12.8 8213.25 900 384 360 140 1000 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
Somerton (G/R) -x-x- - 50 16 24 24 50 40
Hampton (G/R) -x-x- - 50 16 24 24 50 40
Dalby (G/R) -x-x- - - - 8 - 16 10
Westminster Ballroom
Dimensions (LxWxH)
116.5x70.5x12.8
Area (sq.ft)
8213.25
Theater
900
Schoolroom
384
Conference
360
U-Shape
140
Reception
1000
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
Somerton (G/R)
Dimensions (LxWxH)
-x-x-
Area (sq.ft)
-
Theater
50
Schoolroom
16
Conference
24
U-Shape
24
Reception
50
Banquet
40
Hampton (G/R)
Dimensions (LxWxH)
-x-x-
Area (sq.ft)
-
Theater
50
Schoolroom
16
Conference
24
U-Shape
24
Reception
50
Banquet
40
Dalby (G/R)
Dimensions (LxWxH)
-x-x-
Area (sq.ft)
-
Theater
-
Schoolroom
-
Conference
8
U-Shape
-
Reception
16
Banquet
10
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 1000 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
Somerton (G/R) -x-x- - 50 16 24 24 50 40
Hampton (G/R) -x-x- - 50 16 24 24 50 40
Dalby (G/R) -x-x- - - - 8 - 16 10
Westminster Ballroom
Dimensions (LxWxH)
35.5x21.5x3.9
Area (sq.mt)
763
Theater
900
Schoolroom
384
Conference
360
U-Shape
140
Reception
1000
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
Somerton (G/R)
Dimensions (LxWxH)
-x-x-
Area (sq.mt)
-
Theater
50
Schoolroom
16
Conference
24
U-Shape
24
Reception
50
Banquet
40
Hampton (G/R)
Dimensions (LxWxH)
-x-x-
Area (sq.mt)
-
Theater
50
Schoolroom
16
Conference
24
U-Shape
24
Reception
50
Banquet
40
Dalby (G/R)
Dimensions (LxWxH)
-x-x-
Area (sq.mt)
-
Theater
-
Schoolroom
-
Conference
8
U-Shape
-
Reception
16
Banquet
10
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
  • Film Projector with Screen
  • LCD Projector
  • Microphone
  • Overhead Projector
  • PA System
  • TV
  • TV Production Service Provider
  • Teleconferencing
  • Video Camera
  • Videoconferencing
  • Wired Internet
  • Wireless Internet
Event Services
  • Carpenter
  • Certified Meeting Planner
  • Decorator
  • Electrician
  • Locksmith
  • Message Service
  • Photographer
  • 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
  • Fax Service
  • On-Site Business Center is Staffed
  • 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
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London Marriott Hotel Grosvenor Square

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DATES (1 NIGHT) NIGHTS)
Flexible in
S M T W T F S
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

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