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

Hotel Meeting Rooms in London for 400 people

Explore top hotel meeting rooms in London for 400 people, ideal for professional events.

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Trending Hotel Meeting Rooms Venues in London for 400 People

Discover the ideal hotel meeting rooms in London, perfect for hosting up to 400 attendees.

  • One Great George Street - image
    From £150 per person400

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

  • The Langham, London - image
    Regent Street

    The Langham, London

    From £45,000 per person160

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

  • London

    Hilton London Tower Bridge

    From £99 per person450

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

    See venue
  • Moorgate Place

    One Moorgate Place

    From £140 per person250

    A historic hall with a 400-capacity, perfect for conferences, seminars, and presentations.

    See venue
  • Hackney

    Hackney Town Hall

    From £342 per person500

    An art-deco hall with a private entrance, bar, and flexible space for up to 500 guests. Ideal for events.

    See venue
  • West End

    No.11 Cavendish Square

    From £105 per person400

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

    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
  • Holborn

    De Vere Grand Connaught Rooms

    From £140 per person540

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

    See venue

Hotel Meeting Rooms in London for 400 people

Explore top hotel meeting rooms in London for 400 people, ideal for professional events.

About Hotel Meeting Rooms

### Why London's Hotel Meeting Rooms Are Perfect for Your 400-Person Event (And What Makes Them Different) When you're planning an event for 400 people, you need more than just a large space – you need infrastructure that works seamlessly. London's hotel meeting rooms excel here because they're purpose-built for scale, and frankly, they've seen it all before. The real game-changer is the integrated service model. Unlike standalone venues where you're juggling multiple suppliers, hotels handle everything under one roof. We've seen this save event organisers weeks of coordination time and often £3,000-£5,000 in additional vendor fees. The Hilton London Metropole's 465m² ballroom, for instance, comes with dedicated event managers who've orchestrated hundreds of large-scale conferences. #### What Sets London Hotel Meeting Rooms Apart for Large Groups The technical specifications alone make hotels worth considering. Most can handle the power demands of 400-person events – we're talking three-phase power with 100 amps per phase, which is essential when you're running multiple AV setups simultaneously. The ceiling heights typically exceed 4 metres, crucial for proper lighting and projection visibility from the back rows. But here's what really matters: the operational experience. Hotels understand crowd flow in ways that other venues simply don't. They've designed their spaces with multiple entry points, dedicated registration areas, and – this is key – proper climate control zones. Nothing kills an event faster than 400 people in an overheated room. The location advantage is substantial too. Central London hotels offer unmatched transport links, with venues like those near King's Cross providing 25-minute connections to Canary Wharf. Your attendees aren't battling across the city, and international delegates can often walk from their accommodation. #### The Hidden Value in Hotel Partnerships Here's an insider tip: hotels are incredibly motivated to build long-term relationships. We've negotiated packages where the day delegate rate drops from £75 to £55 per person for repeat bookings. They'll often throw in complimentary upgrades – better AV equipment, extended setup time, or enhanced catering options. The sustainability angle is increasingly important too. Many London hotels now offer [sustainable meeting venues](https://hirespace.com/blog/the-top-sustainable-meeting-venues-in-london/) with carbon-neutral packages, which can be a significant factor for corporate clients with ESG commitments. For your 400-person event, you're looking at day delegate rates between £55-£120+ depending on the venue tier and inclusions. The sweet spot for most corporate events sits around £65-£75 per delegate, which typically covers the space, basic AV, and full catering. The next step? Start with your transport requirements and work backwards – your venue choice will largely determine your event's success before you even send the first invitation. ### The Essential Planning Timeline: 8 Weeks to Flawless Execution for Large-Scale Hotel Events Eight weeks might sound generous for booking a hotel meeting room, but when you're coordinating 400 people, it's actually the minimum you need to avoid costly last-minute compromises. We've seen too many organisers leave it to six weeks and end up paying 30-40% more because their preferred venues are already booked. The reality is that London's premium hotel meeting spaces – those with the 465m² ballrooms and proper infrastructure – get snapped up quickly, especially during peak conference season (September-November and February-May). Start your venue search at the 8-week mark, and you'll have genuine choice rather than settling for what's available. #### Weeks 8-6: Securing Your Foundation Your first priority is locking in the venue and confirming capacity. Don't just trust the theatre-style numbers – ask for the exact floor plan and sight lines. We always request a site visit during this phase because photos can be misleading. The Park Plaza Westminster Bridge, for example, looks spacious online, but the pillars can create blind spots for 50+ attendees if you're not careful with your layout. This is also when you negotiate your day delegate rate. Hotels are more flexible at 8 weeks out – we've secured rates as low as £55 per person by booking early and committing to minimum numbers. Leave it later, and you're looking at £75+ with less room for negotiation. #### Weeks 6-4: The Technical Deep Dive Now you're into the nitty-gritty of AV requirements and power specifications. For 400 people, you'll need multiple microphone points, potentially LED screens rather than projectors for back-row visibility, and dedicated streaming capabilities if you're broadcasting. Hotels typically need 3-4 weeks to coordinate with their AV partners for complex setups. Catering menus should be finalised during this window too. Large-scale hotel catering requires advance ordering, especially if you're accommodating dietary requirements. Budget for 15-20% of your group having specific needs – it's better to over-cater than scramble at the last minute. #### Weeks 4-1: Final Coordination The final month is about confirming attendee numbers, finalising room layouts, and coordinating with the hotel's event team on logistics like registration flow and break-out space allocation. This is when having chosen a hotel with experience in [large corporate events](https://hirespace.com/blog/7-corporate-venues-loved-by-london-pas/) really pays dividends – their event managers know exactly what questions to ask. Your next step should be creating a venue shortlist based on transport links and technical capabilities, then booking those site visits while you still have negotiating power. ### Navigating London's Hotel Meeting Room Landscape: Location, Transport and Hidden Costs Revealed Location isn't just about prestige when you're hosting 400 people – it's about logistics that can make or break your event budget. We've seen organisers choose a stunning Mayfair hotel only to discover their delegates are spending £15-20 each on taxis because the nearest tube station is a 10-minute walk away. Multiply that by 400 people, and you've just added £6,000-8,000 to your event's hidden costs. #### The Transport Reality Check for Large Groups The sweet spot for 400-person events is within 200 metres of a major transport hub. King's Cross, Liverpool Street, and London Bridge stations offer the best connectivity – your delegates can reach these from anywhere in Greater London within 45 minutes. We always map journey times from key business districts: City to King's Cross is 15 minutes, Canary Wharf to London Bridge is 12 minutes via the Jubilee line. But here's what most people miss: platform capacity during rush hour. If your event finishes at 5pm and 400 people hit Liverpool Street simultaneously, they're competing with 50,000+ commuters. Stagger your finish times or choose venues with multiple transport options. The Hilton London Metropole near Edgware Road works brilliantly because it's served by three tube lines plus buses. #### Hidden Costs That Catch Everyone Out Parking is the big one. Central London hotels charge £25-40 per day, and spaces are limited. We budget for 15-20% of delegates driving, which means 60-80 parking spaces for a 400-person event. That's £1,500-3,200 just in parking fees. Hotels near major stations reduce this dramatically – most delegates will use public transport. Loading and setup access is another gotcha. Many prestigious hotels have restricted delivery windows (typically 6-8am) and charge £200-500 for extended access. Factor this in early, especially if you're bringing in custom staging or [memorable meeting elements](https://hirespace.com/blog/5-ways-to-make-your-meetings-more-memorable/). #### The Zone Strategy That Saves Thousands Here's our insider approach: Zone 1 hotels for prestige events where budget isn't the primary concern (£75-120+ per delegate), Zone 2 for the sweet spot of accessibility and value (£55-75 per delegate). Venues like those near Canary Wharf offer excellent facilities at Zone 2 prices while maintaining that corporate credibility. The key is matching your audience to location. Tech conferences work brilliantly in Shoreditch hotels, financial events suit the City or Canary Wharf, while [corporate team events](https://hirespace.com/GB/London/Corporate-Days-Out) often benefit from slightly more relaxed locations like King's Cross or Southbank. Start by mapping where your delegates are travelling from, then work backwards to find the optimal transport intersection – that's where you'll find both the best value and the happiest attendees. ### Smart Booking Strategies That Save Thousands on 400-Person Hotel Events The difference between paying £22,000 and £35,000 for the same 400-person hotel event often comes down to three strategic decisions made during the booking process. We've negotiated hundreds of these deals, and the savings opportunities are substantial if you know where to look. The biggest mistake we see is booking during peak conference season without exploring shoulder periods. September-November and February-May command premium rates, but January and June offer identical facilities at 25-30% lower costs. A £75 day delegate rate in October becomes £55 in January – that's £8,000 saved on a 400-person event without compromising quality. #### The Power of Package Negotiation Hotels make their real money on accommodation, not meeting rooms. This is your leverage. Even if only 50 of your 400 delegates need overnight stays, that's £7,500-12,500 in room revenue. Use this to negotiate better day delegate rates or complimentary upgrades. We've secured free AV equipment worth £3,000+ by guaranteeing 40 room nights. The key is presenting your total spend upfront. A £22,000 meeting room booking becomes a £35,000+ total package when you add accommodation, and suddenly you're their priority client. Hotels will often match competitor rates or throw in extras like extended setup time, upgraded catering, or complimentary WiFi upgrades. #### Timing Your Booking for Maximum Leverage Book Tuesday-Thursday events for the best rates – hotels are desperate to fill midweek capacity. Monday and Friday command 15-20% premiums because they're popular for extended corporate programmes. We've seen identical venues charge £65 per delegate on Wednesday versus £80 on Friday. The 6-8 week booking window is your sweet spot for negotiation. Earlier than 8 weeks, and hotels haven't finalised their pricing strategy. Later than 6 weeks, and you're competing with last-minute bookers who'll pay premium rates. This timing also allows you to leverage competing quotes – hotels will often match or beat competitor pricing when they have time to plan. #### The Group Booking Advantage For 400-person events, you're in the hotel's 'key account' category. This unlocks benefits like dedicated event managers, priority setup slots, and flexible payment terms. We always negotiate 30-day payment terms rather than upfront deposits – that's improved cash flow worth thousands in opportunity cost. Consider splitting larger groups across multiple smaller rooms if the hotel offers better per-person rates. Sometimes booking two 200-person spaces costs less than one 400-person ballroom, plus you get more flexibility for breakout sessions. Your next move should be creating a comparison spreadsheet with total package costs, not just room rates – the cheapest day delegate rate rarely equals the lowest total event cost. ### Avoiding the 7 Most Expensive Mistakes When Booking Large Hotel Meeting Rooms in London We've watched organisers lose £15,000+ on avoidable mistakes when booking large hotel meeting rooms in London. The painful part? Most of these errors happen in the final weeks before the event, when your options are limited and costs spiral quickly. Here are the seven traps that catch even experienced planners off guard. #### Mistake #1: Underestimating Power and Technical Requirements The biggest shock comes when your AV supplier arrives and discovers the hotel's power supply can't handle your setup. For 400-person events, you need three-phase power with minimum 100 amps per phase – but many older London hotels max out at 60 amps. We've seen last-minute generator rentals cost £4,000-6,000 because this wasn't checked upfront. Always request detailed technical specifications during your initial enquiry. #### Mistake #2: Ignoring the 'Minimum Spend' Trap Hotels rarely advertise minimum spend requirements, but they're standard for large spaces. A £55 day delegate rate sounds reasonable until you discover there's a £30,000 minimum spend regardless of actual attendance. If only 350 people show up instead of 400, you're still paying for the full amount. Build 10-15% attendance buffer into your calculations, or negotiate flexible minimums based on confirmed numbers 48 hours before the event. #### Mistake #3: Overlooking Setup and Breakdown Logistics London hotels have strict delivery windows – typically 6-8am for large events. Miss this window, and you're looking at £500-1,000 in overtime charges plus potential delays. The real killer is breakdown time: many venues charge full daily rates if you're not cleared by midnight. For complex 400-person setups, budget a full day each for setup and breakdown, especially if you're incorporating [memorable meeting elements](https://hirespace.com/blog/5-ways-to-make-your-meetings-more-memorable/) or custom branding. #### Mistake #4: Choosing Prestige Over Practicality That stunning Mayfair ballroom might impress, but if it's a 15-minute walk from the nearest tube station, you've just added £8,000+ in delegate transport costs. We always map the 200-metre radius from major transport hubs – venues within this zone save thousands in hidden delegate expenses and reduce late arrivals significantly. #### Mistake #5: Underestimating Catering Complexity For 400 people, dietary requirements become a logistical nightmare if not planned properly. Hotels need 3-4 weeks notice for complex dietary needs, and last-minute changes cost £15-25 per special meal. Budget for 20% of your group having specific requirements – it's better to over-order than face £3,000+ in emergency catering costs. #### Mistake #6: Ignoring Seasonal Rate Fluctuations Booking identical venues in October versus January can mean £20,000+ difference in total costs. Peak conference season (September-November, February-May) commands 30-40% premiums. If your event dates are flexible, shifting to shoulder periods saves massive amounts without compromising quality. #### Mistake #7: Failing to Leverage Total Spend Hotels make real money on accommodation, not meeting rooms. Even 30 room nights represents £4,500-7,500 in additional revenue – use this as negotiating leverage. We've secured £3,000+ in complimentary AV upgrades by presenting total package spend upfront rather than just meeting room costs. Your next step should be creating a detailed technical requirements checklist and sharing it with potential venues during initial enquiries – catching these issues early saves both money and stress.

Featured Venues for Hotel Meeting Rooms

Browse 16 venues perfect for Hotel Meeting Rooms

Weddings at One Great George Street

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

From: £150 per person

Capacity: Up to 400 guests

Events at The Langham, London

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

From: £45000 per person

Capacity: Up to 160 guests

Weddings at Hilton London Tower Bridge

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

From: £99 per person

Capacity: Up to 450 guests

Business at One Moorgate Place

A historic hall with a 400-capacity, perfect for conferences, seminars, and presentations.

From: £140 per person

Capacity: Up to 250 guests

Events at Hackney Town Hall

An art-deco hall with a private entrance, bar, and flexible space for up to 500 guests. Ideal for events.

From: £342 per person

Capacity: Up to 500 guests

Business at No.11 Cavendish Square

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

From: £105 per person

Capacity: Up to 400 guests

Business at ISH Venues

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

From: £45 per person

Capacity: Up to 550 guests

Events at De Vere Grand Connaught Rooms

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

From: £140 per person

Capacity: Up to 540 guests

Dining at Park Plaza London Riverbank

A versatile event space with terrace for up to 260 guests, ideal for dinners, parties, and receptions.

From: £79 per person

Capacity: Up to 400 guests

Business at Rosewood London

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

From: £130 per person

Capacity: Up to 430 guests

...and 6 more venues available

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