Grosvenor Square, London W1K 6JP United Kingdom
+44 20 7493 1232

Organize a meeting or event

Send your requirements to our expert planners for more information on pricing and room availability.

  • 13

    Event Rooms

  • 2,273 sq m

    Total Event Space

  • 1,000

    Capacity Largest Space

  • 12

    Maximum Breakout Rooms

About This Venue

  • Celebrate your wedding in our Westminster Ballroom, one of the largest pillarless venues in London

  • Discover our Mayfair Suite, a perfect wedding venue for more intimate weddings and receptions

  • Explore our 15 flexible venues, suitable for all of your wedding and related events in Mayfair

  • Our high-tech venues are licensed for civil ceremonies; we also offer private dining rooms for hire

  • Let our expert chefs create a delicious menu for your wedding banquet here in Mayfair, London

  • From planning to the final goodbyes, our staff works tirelessly to ensure your wedding is flawless

Plan an Inspired Event

Image See What’s Possible
See What's Possible.

Search our event ideas online with inspiring event photos, tips and layouts - specific to this hotel.

Attendee Booking Tools

Image Attendee Booking Tools

We can provide you with a unique complimentary Reservation Link that makes it easy for your guests to reserve their rooms.

  • Shared in an email
  • Embed in a website
  • Personalized with your group name, event dates, hotel, and special rates
  • Displayed in multiple languages on Marriott domains worldwide

Manage Your Event with Ease

Image Manage Your Event with Ease
Keep Your Event in Hand.

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

Group Lists

If you have a list of your guests, we can make reservations for all of them.

Rooming Lists

We can send you a report showing which of your guests have reserved rooms and when they plan to arrive.

Mobile Check-In

Guests can check in before their stay, receive instant alerts when their room is ready and check out by skipping the front desk.

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Reward Yourself

Earn up to 50,000 plus Elite status, discounts and more.

Services and Facilities

Wedding Certification

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.

Capacity

Floor Plans

Capacity Chart

Convert Feet | Reset
  • Westminster Ballroom
  • 35.5x21.5x3.9
  • 763.25
  • 1000
  • 384
  • 360
  • 140
  • 1000
  • 580
  • Belgrave Room
  • 14x21.5x3.9
  • 301
  • 300
  • 120
  • 120
  • 70
  • 250
  • 140
  • Chester Room
  • 10.3x21.5x3.9
  • 221.45
  • 180
  • 84
  • 84
  • 70
  • 180
  • 90
  • Eaton Room
  • 11x21.5x3.9
  • 236.5
  • 200
  • 96
  • 80
  • 80
  • 200
  • 130
  • Belgrave/Chester
  • 24.3x21.5x3.9
  • 522.5
  • 600
  • 288
  • 280
  • 110
  • 600
  • 312
  • Chester/Eaton
  • 21.3x21.5x3.9
  • 458
  • 450
  • 216
  • 240
  • 80
  • 450
  • 250
  • Whitehall Suite
  • 30.9x6x2.2
  • 185.4
  • 558
  •  
  •  
  •  
  • 558
  • 90
  • St James/Hanover
  • 20x5x2.2
  • 100
  • 160
  • 65
  • 15
  • 38
  • 160
  • 80
  • St James
  • 8.5x5x2.2
  • 42.5
  • 40
  • 24
  • 16
  • 16
  • 40
  • 24
  • Hanover
  • 11.5x5x2.2
  • 57.5
  • 80
  • 36
  • 24
  • 18
  • 80
  • 36
  • The Berkeley Suite
  • 10.9x5.3x2.2
  • 57.77
  • 100
  • 30
  • 24
  • 16
  • 100
  • 26
  • Mayfair Suite
  • 29x7.1x2
  • 205.9
  • 170
  • 80
  • 72
  • 70
  • 170
  • 120
  • Mayfair 1
  • 7.1x7.1x2
  • 50.41
  • 40
  • 20
  • 18
  • 18
  • 40
  • 30
  • Mayfair 2
  • 7.1x7.1x2
  • 50.41
  • 40
  • 20
  • 18
  • 18
  • 40
  • 30
  • Mayfair 3
  • 7.1x7.1x2
  • 50.41
  • 40
  • 20
  • 18
  • 18
  • 40
  • 30
  • Mayfair 4
  • 7.1x7.1x2
  • 50.41
  • 40
  • 20
  • 18
  • 18
  • 40
  • 30
  • Mayfair 1/2
  • 14.2x7.1x2
  • 100.8
  • 80
  • 40
  • 36
  • 36
  • 80
  • 60
  • Mayfair 1/2/3
  • 21.3x7.1x2
  • 151.2
  • 120
  • 60
  • 54
  • 54
  • 120
  • 90
  • Mayfair 3/4
  • 28.4x7.1x2
  • 201.6
  • 80
  • 40
  • 36
  • 36
  • 80
  • 60
  • Somerton (G/R)
  • 0x0x0
  • 0
  • 50
  • 16
  • 24
  • 24
  • 50
  • 40
  • Hampton (G/R)
  • 0x0x0
  • 0
  • 50
  • 16
  • 24
  • 24
  • 50
  • 40
  • Dalby (G/R)
  • 0x0x0
  • 0
  • 16
  •  
  • 8
  •  
  • 16
  • 10

Room Set-Up Examples

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.

London Marriott® Hotel Grosvenor Square