Elegant ballroom at Four Seasons London, perfect for weddings and corporate events. - Banner

Conference Meeting Rooms in London for 400 people

Explore top conference meeting rooms in London for 400 people that inspire productivity and collaboration.

4.8 TrustPilot Rating
Best price guarantee
Fast response

Trending Conference Meeting Rooms Venues in London for 400 People

Discover the ideal conference meeting rooms in London, perfect for accommodating up to 400 attendees.

  • De Vere Grand Connaught Rooms  - image
    From £140 per person540

    A grand, opulent hall in Covent Garden for large events, featuring high ceilings and elegant decor.

  • No.11 Cavendish Square - image
    From £105 per person400

    Modern, versatile conference space with courtyard in a Georgian townhouse. Ideal for large events.

  • London

    Hilton London Tower Bridge

    From £99 per person450

    A bright, adaptable suite with stunning views, ideal for meetings and intimate events.

    See venue
  • Westminster

    One Great George Street

    From £150 per person400

    A grand, historic hall with period features and natural light. Ideal for weddings and large events.

    See venue
  • Holborn

    Rosewood London

    From £130 per person430

    A luxurious, flexible ballroom in a historic building, accommodating up to 555 guests.

    See venue
  • Regent Street

    The Langham, London

    From £7,500 per person2,891

    A luxurious grand ballroom in a historic hotel, ideal for weddings and corporate events up to 375 guests.

    See venue
  • 229 Great Portland Street

    ISH Venues

    From £45 per person550

    A versatile 300-seat space in central London, ideal for conferences, launches, and exhibitions.

    See venue
  • Blackfriars

    The Mermaid London

    From £95 per person500

    A versatile 500-capacity space with city skyline views, ideal for receptions, dinners, and events.

    See venue