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

  • Plan the wedding of your dreams at our sophisticated hotel, ideally situated in the heart of Mayfair

  • Our venues are licensed for civil ceremonies, and offer flexible layouts and modern technology

  • The gorgeously transformed Westminster Ballroom is one of the largest pillar-free venues in London

  • Smaller venues, including the Mayfair Suite, are well suited to more intimate weddings and events

  • Let us design a delicious menu for you, or bring in outside catering from a local London provider

  • Trust our wedding planners to help you with everything from ballroom set-up to accommodation blocks

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.

Image Marriott Rewards
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
  • St James
  • 8.5x5x2.2
  • 42.5
  • 40
  • 24
  • 16
  • 16
  • 40
  • 24
  • 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
  • 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
  • St James/Hanover
  • 20x5x2.2
  • 100
  • 160
  • 65
  • 15
  • 38
  • 160
  • 80
  • 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
  • Whitehall Suite
  • 30.9x6x2.2
  • 185.4
  • 558
  •  
  •  
  •  
  • 558
  • 90
  • Mayfair 3/4
  • 28.4x7.1x2
  • 201.6
  • 80
  • 40
  • 36
  • 36
  • 80
  • 60
  • Mayfair Suite
  • 29x7.1x2
  • 205.9
  • 170
  • 80
  • 72
  • 70
  • 170
  • 120
  • 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 Room
  • 14x21.5x3.9
  • 301
  • 300
  • 120
  • 120
  • 70
  • 250
  • 140
  • Chester/Eaton
  • 21.3x21.5x3.9
  • 458
  • 450
  • 216
  • 240
  • 80
  • 450
  • 250
  • Belgrave/Chester
  • 24.3x21.5x3.9
  • 522.5
  • 600
  • 288
  • 280
  • 110
  • 600
  • 312
  • Westminster Ballroom
  • 35.5x21.5x3.9
  • 763.25
  • 1000
  • 384
  • 360
  • 140
  • 1000
  • 580
  • 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