Skip to main content
Menu close text
Marriott Logo
Marriott Logo
Help

Select a Language

English(US) English(UK) Español اللغة العربية 简体中文

London Marriott Hotel Grosvenor Square

London Marriott Hotel Grosvenor Square

VIEW MAP VIEW MAP
+44 20-74931232
Cancel
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
  • ballroom set up for wedding banquet
Credit Card
Earn 3 Free Nights + 50,000 Bonus Points
Learn More

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. Our Mayfair wedding venue offers the ideal setting for your special day, combining timeless elegance with impeccable service. For corporate clients, our flexible meeting rooms in Mayfair provide the perfect space. From intimate gatherings to large-scale events, our event venue in Mayfair 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.

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
Our event venues in Mayfair offer packages for civil ceremonies, private dining, weddings, and more.
Seat 900 conference attendees in our elegantly designed Westminster Ballroom event venue in Mayfair
Take a look at our prestigious Westminster Ballroom, Whitehall Suite & Mayfair Suite here. Learn More
Hire our meeting rooms 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

Mayfair Meeting Rooms

Our newly refurbished Mayfair meeting rooms offer a fresh, modern space designed for productivity and collaboration. With two rooms now enhanced by natural light, the bright and inviting atmosphere creates the perfect setting for meetings, Christmas parties, dinners and corporate events. A flexible partition allows all Mayfair rooms to be combined into one larger space, offering adaptability for different event sizes. For the first time, guests can also enjoy a dedicated breakout area ideal for networking, coffee breaks, or informal discussions.

Mayfair 1 & 2 Banquet
Mayfair 4 Boardroom
Mayfairs Breakout area
/

    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
    Mayfair 4 Theater
    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.

    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 Mayfair wedding venues
    As a licensed civil ceremony wedding venue in Mayfair we can host your full Big Day celebrations.
    Choose one of our Mayfair wedding venue's signature packages with a dedicated Event Manager.
    Celebrate any special occasion from intimate dinners to large parties at our Mayfair wedding venue.
    Dry Hire packages with an approved external caterer available for all our event venues in Mayfair

    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 love story.
    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 Suite serves as an ideal reception area.

    /
      Ballroom Christmas
      Westminster Ballroom - Event Venue
      Whitehall Suite
      Mobile bar with liquor display

      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 in Mayfair.
      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 the ability to select a climate action project to support, your event can be both extraordinary and climate-conscious.
      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

      LONDON MARRIOTT® HOTEL GROSVENOR SQUARE

      Overview Gallery Accommodations Premium Accommodations Dining Experiences Meetings & Weddings

      © 1996 – 2025 Marriott International, Inc. All rights reserved. Marriott Proprietary Information

      English
      Careers Opens a new window Terms of Use Program Terms & Conditions Privacy Center Digital Accessibility Sustainability in the Supply Chain Site Map Hotel Site Map Help Opens a new window