Waterfront Suite at Brentford Lock, scenic venue for outdoor events and receptions. - Banner

Meeting Rooms in West London for 400 people

Explore spacious meeting rooms in West London for up to 400 people.

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Trending Meeting Rooms Venues in West London for 400 People

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

  • Clayton Hotel Chiswick - image
    From £5,500 per person400

    A versatile, tech-equipped ballroom in West London for up to 330 guests. Ideal for various events.

  • Chelsea Football Club - image
    From £115 per person1,000

    A versatile grand hall at Chelsea FC, ideal for large events and gala dinners up to 600 guests.

  • Kensington

    Holiday Inn London - Kensington High Street

    From £55 per person450

    A versatile pillar-free event space with garden access, ideal for large receptions and exhibitions.

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  • Hammersmith

    Novotel London West

    From £90 per person1,000

    The fully carpeted and air conditioned Chablis Suite offers a dedicated bar, kitchen, cloakroom and office. Chablis Suite measures 1,360 m 2 (14,638 sq ft) and makes this ground floor space ideal for an exhibition, Events, Trade Fair, Product Launch or Meeting. Your guests get an excellent first impression as they enter the stylish registration area. Inside, the suite offers you the flexibility to let your imagination run wild.

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  • Hammersmith and Fulham

    Mercure London Earls Court Hotel

    From £65 per person550

    A large, versatile conference space for up to 600 in a modern event centre with on-site hotel.

    See venue
  • Isleworth

    Hilton London Syon Park

    From £18,000 per person400

    A grand ballroom with natural light and chandeliers in a scenic park, ideal for large weddings.

    See venue
  • Chelsea Harbour

    The Chelsea Harbour Hotel

    From £7,000 per person700

    A grand ballroom with marina views, ideal for large weddings and receptions up to 700 guests.

    See venue
  • Brentford

    The Waterfront at Brentford Lock

    From £4,800 per person700

    Bright, flexible waterside venue for events and weddings, with panoramic views and hotel accommodation.

    See venue
See all Meeting Rooms

Meeting Rooms in West London for 400 people

Explore spacious meeting rooms in West London for up to 400 people.

About Meeting Rooms

### Why West London's Meeting Room Scene is Perfect for Your 400-Person Corporate Event When you're tasked with finding a meeting room for 400 people, West London emerges as the clear winner for corporate events – and I've seen firsthand why it consistently outperforms other London areas for large-scale gatherings. The numbers tell a compelling story. West London's meeting venues for 400+ delegates typically range from £15,000-£25,000 per day, but you're getting exceptional value when you consider the infrastructure. Take Paddington Station's proximity – your delegates can reach Heathrow in just 15 minutes via the Heathrow Express, making international attendance seamless. We've organised events where 30% of attendees flew in the morning of the event and departed the same evening, something that's practically impossible with venues in other London areas. #### The Transport Advantage That Actually Matters What sets West London apart isn't just connectivity – it's the reliability. The Elizabeth Line has transformed access patterns, with venues near stations like Ealing Broadway now offering step-free access that meets modern accessibility standards. For 400-person events, this infrastructure becomes crucial when you're coordinating arrival times and managing delegate flow. The area's unique positioning between the financial district and tech hubs means your venue choice can enhance networking opportunities. We've seen remarkable results when clients book [Meeting Rooms in Paddington](https://hirespace.com/GB/London/West-London/Paddington/Meeting-Rooms) – the proximity to both traditional finance and emerging tech sectors creates natural conversation starters. #### Space and Scale Considerations Meeting rooms for 400 people require a minimum of 350-500m² with 4-metre ceiling heights for proper AV setup. West London venues consistently deliver on these specifications, with many offering flexible configurations: theatre-style for 400, banquet seating for 300, or classroom layouts for 200. The Queen Elizabeth II Centre's Churchill Room exemplifies this versatility at 450m². What's particularly valuable about West London's offering is the blend of modern infrastructure with character. Unlike sterile conference centres elsewhere, venues here often feature Thames views or historic architecture that delegates remember long after the presentations end. For your next 400-person corporate event, consider exploring [Meeting Rooms in Hammersmith Fulham](https://hirespace.com/GB/London/West-London/Hammersmith-Fulham/Meeting-Rooms) or [Meeting Rooms in Kensington Chelsea](https://hirespace.com/GB/London/West-London/Kensington-Chelsea/Meeting-Rooms) – both areas offer the perfect combination of accessibility, prestige, and practical functionality that large-scale corporate events demand. ### The Essential Planning Blueprint: What You Really Need for a 400-Person Meeting Room in West London After organising dozens of 400-person meetings across West London, I've learned that success hinges on getting the fundamentals right from day one. The scale changes everything – what works for smaller gatherings simply doesn't translate when you're coordinating this many delegates. #### Power and Technical Infrastructure That Won't Let You Down Your venue needs a minimum 100-amp, 3-phase power supply – non-negotiable for 400 people. I've seen events grind to a halt when organisers assumed standard office power would suffice. West London venues like those in [Meeting Rooms in Hammersmith](https://hirespace.com/GB/London/West-London/Hammersmith/Meeting-Rooms) typically offer dedicated 100 Mbps internet lines, but always request a backup connection. For hybrid events, which now represent 60% of large corporate meetings, you'll need fiber-optic streaming infrastructure. The AV requirements scale exponentially. You're looking at multiple high-definition projectors, surround sound systems, and wireless microphone capabilities for Q&A sessions. Climate control becomes critical too – 400 people generate significant heat, so ensure your venue offers zoned HVAC with individual section controls. #### Space Configuration and Flow Management Here's where experience matters: a 400-person theatre setup needs 350-500m² minimum, but the real challenge is delegate flow. Plan for 20% arrival within the first 15 minutes – that's 80 people hitting registration simultaneously. Your venue needs multiple entry points and at least 50m² of storage space for registration materials and delegate bags. | Layout Style | Capacity | Space Required | Best For | |--------------|----------|----------------|----------| | Theatre | 400 | 400m² | Presentations | | Banquet | 300 | 450m² | Networking events | | Classroom | 200 | 500m² | Interactive sessions | #### Licensing and Compliance Essentials For 400+ attendees, you'll need a premises license and £10 million public liability insurance. In areas like Kensington, Temporary Event Notices are required for alcohol service. Fire safety becomes paramount – ensure clearly marked exits and conduct a site visit to verify evacuation procedures. The accessibility requirements under the UK Equality Act are stringent for this scale. Your venue must provide ramps, lifts, and accessible facilities. [Meeting Rooms in Notting Hill](https://hirespace.com/GB/London/West-London/Notting-Hill/Meeting-Rooms) often excel in this area due to recent renovations. Start your venue search 6-8 months ahead for peak periods (May-July, November-December). Book your site visit during a similar-sized event to see the venue under realistic conditions – it's the only way to truly assess whether the space can handle your requirements. ### Navigating West London's Transport Links and Local Advantages for Large-Scale Corporate Meetings ### Navigating West London's Transport Links and Local Advantages for Large-Scale Corporate Meetings The logistics of moving 400 people efficiently can make or break your event, and West London's transport infrastructure offers advantages that other areas simply can't match. Having coordinated arrivals for events this size, I can tell you that the difference between smooth delegate flow and chaos often comes down to venue location and transport planning. #### The Paddington Advantage for International Delegates Paddington Station transforms how you handle international attendance. The Heathrow Express delivers delegates from Terminal 5 to central West London in 15 minutes – crucial when you're managing tight schedules. We've successfully coordinated events where European executives landed at 8am and were in their seats by 9:30am for a 10am start. This proximity means you can realistically expect 20-30% international attendance for major corporate meetings, significantly higher than venues in other London areas. The Elizabeth Line has been a game-changer for accessibility. Stations like Ealing Broadway now offer step-free access, essential when you're managing 400 delegates with varying mobility needs. For venues near [Meeting Rooms in Ealing](https://hirespace.com/GB/London/West-London/Ealing/Meeting-Rooms), this infrastructure upgrade has reduced arrival stress considerably. #### Strategic Parking and Ground Transport Large-scale events require serious parking consideration. Westfield London offers day parking at around £8, but for 400 people, you'll need multiple locations. The A40 corridor provides excellent coach access, though avoid peak hours (7am-9am, 4pm-6pm) when planning arrival times. We typically stagger arrivals across 90 minutes to prevent bottlenecks. #### Local Business District Benefits West London's positioning between traditional finance and emerging tech sectors creates unique networking opportunities. The proximity to White City's media hub, including BBC Studios, means your delegates often encounter industry peers naturally. [Meeting Rooms in Shepherds Bush](https://hirespace.com/GB/London/West-London/Shepherds-Bush/Meeting-Rooms) particularly benefit from this cross-sector pollination. The Thames-side locations in areas like Hammersmith offer scenic breaks between sessions – something delegates genuinely appreciate during long meeting days. These venues often feature riverside terraces perfect for networking breaks. #### Practical Transport Planning Book transport surveys 3 months ahead. Survey your expected attendees about travel methods – this data drives your venue selection. For events with significant international attendance, prioritise venues within 30 minutes of Paddington. For domestic-focused meetings, [Meeting Rooms in Heathrow](https://hirespace.com/GB/London/West-London/Heathrow/Meeting-Rooms) offer excellent value with direct airport access. Consider last transport times when planning your agenda. The final Tube services from central London run around midnight, giving you flexibility for evening networking sessions that other areas can't accommodate. ### Smart Budgeting and Booking Strategies for Premium West London Meeting Venues ### Smart Budgeting and Booking Strategies for Premium West London Meeting Venues The financial reality of hosting 400 people in West London requires strategic thinking – and frankly, a realistic budget. After negotiating hundreds of these contracts, I've learned that the venues charging £15,000-£25,000 per day aren't being greedy; they're reflecting the true cost of delivering quality at this scale. #### Understanding the Real Cost Structure Day delegate rates in West London typically range from £50-£65 for standard venues, jumping to £100+ for premium locations. But here's what most organisers miss: the minimum spend requirements. Venues often require guarantees of 350+ delegates even if you're planning for 400, protecting themselves against last-minute cancellations. Factor this into your budget from day one. The 25% deposit requirement is standard, but negotiate payment terms. We've secured 60-day payment windows for established corporate clients, significantly improving cash flow. For venues in [Meeting Rooms in Kensington Chelsea](https://hirespace.com/GB/London/West-London/Kensington-Chelsea/Meeting-Rooms), this flexibility often makes the difference between affordable and prohibitive. #### Timing Your Booking for Maximum Value Peak periods (May-July, November-December) command premium rates, but the savings during off-peak months are substantial. January-February weekday bookings can deliver 30-40% cost reductions. We've moved client events from June to February and saved £8,000 on venue costs alone – money that funded enhanced catering and delegate gifts. Book 6-8 months ahead for peak periods, but don't overlook last-minute opportunities. Venues occasionally release premium dates 6-8 weeks out due to cancellations, often at reduced rates. Maintain relationships with venue sales teams who'll alert you to these opportunities. #### Negotiation Strategies That Actually Work Bundle services for better rates. Combining venue hire with catering, AV, and accommodation often unlocks 15-20% savings. For [Meeting Rooms in Paddington](https://hirespace.com/GB/London/West-London/Paddington/Meeting-Rooms), proximity to quality hotels makes package deals particularly attractive. Request detailed breakdowns of all charges. Hidden costs like security, cleaning, and equipment delivery can add £2,000-£3,000 to your final bill. Negotiate these upfront or source alternatives independently. #### Smart Money-Saving Tactics Consider Tuesday-Thursday bookings over Monday-Friday events. The rate difference can be £3,000-£5,000, and delegate attendance often improves midweek. Hybrid capabilities reduce venue size requirements – 300 in-person plus 100 virtual attendees often costs less than 400 physical spaces. Start your venue search with a clear maximum budget and stick to it. The temptation to upgrade is constant, but disciplined budgeting ensures successful events that don't break the bank. ### Avoiding the 5 Most Common Pitfalls When Hosting 400-Person Events in West London ### Avoiding the 5 Most Common Pitfalls When Hosting 400-Person Events in West London The scale of a 400-person meeting amplifies every mistake, and I've witnessed organisers learn this the hard way. What seems manageable for 50 people becomes a logistical nightmare when multiplied by eight. Here are the critical pitfalls that can derail your West London event – and how to sidestep them entirely. #### Pitfall 1: Underestimating Registration and Arrival Logistics The biggest mistake? Assuming people will arrive evenly over 30 minutes. Reality check: 35% of your 400 delegates will arrive within the first 15 minutes, creating bottlenecks that ripple through your entire schedule. We've seen registration queues stretch outside venues, with frustrated executives checking emails instead of networking. Solution: Plan for 140 people hitting registration simultaneously. Book venues with multiple entry points and dedicate 20% more space to registration than you think necessary. [Meeting Rooms in Hammersmith Fulham](https://hirespace.com/GB/London/West-London/Hammersmith-Fulham/Meeting-Rooms) often excel here with their foyer configurations designed for large-scale arrivals. #### Pitfall 2: Inadequate Power and Internet Infrastructure Standard office power won't support 400 people's devices plus professional AV equipment. I've watched presentations halt mid-flow when circuits overloaded. Similarly, assuming venue WiFi will handle 400 simultaneous connections is optimistic at best. The fix: Verify 100-amp, 3-phase power supply and request dedicated internet bandwidth of at least 100 Mbps. For hybrid events, demand fiber-optic backup connections. This infrastructure investment prevents the £15,000 venue hire becoming worthless due to technical failures. #### Pitfall 3: Ignoring Seasonal Weather Impact on Delegate Comfort West London's mild summers average 22°C, but 400 people in a meeting room generate significant additional heat. Winter events face different challenges – wet weather means 400 coats, umbrellas, and muddy shoes requiring proper storage and drying facilities. Plan climate control for 25°C above external temperature and ensure adequate cloakroom facilities. Venues near [Meeting Rooms in Notting Hill](https://hirespace.com/GB/London/West-London/Notting-Hill/Meeting-Rooms) often provide heated entrance areas that prevent weather-related disruption. #### Pitfall 4: Overlooking Catering Logistics for Large Groups Feeding 400 people isn't just about quantity – it's about timing and dietary requirements. Standard catering assumes 10% dietary restrictions; for corporate events, expect 25-30% with specific needs. #### Pitfall 5: Inadequate Emergency and Evacuation Planning Fire safety regulations become complex with 400+ attendees. Many organisers discover too late that their chosen venue lacks sufficient emergency exits or clear evacuation procedures for large groups. Conduct site visits during similar-sized events to observe real-world crowd management. Verify evacuation routes can handle 400 people within regulatory timeframes. This due diligence prevents last-minute venue changes that can cost thousands. Start your venue search with these pitfalls in mind, and you'll avoid the costly mistakes that derail even well-planned corporate events.

Featured Venues for Meeting Rooms

Browse 8 venues perfect for Meeting Rooms

Business at Clayton Hotel Chiswick

A versatile, tech-equipped ballroom in West London for up to 330 guests. Ideal for various events.

From: £5500 per person

Capacity: Up to 400 guests

Dining at Chelsea Football Club

A versatile grand hall at Chelsea FC, ideal for large events and gala dinners up to 600 guests.

From: £115 per person

Capacity: Up to 1000 guests

Events at Holiday Inn London - Kensington High Street

A versatile pillar-free event space with garden access, ideal for large receptions and exhibitions.

From: £55 per person

Capacity: Up to 450 guests

Events at Novotel London West

From: £90 per person

Capacity: Up to 1000 guests

Business at Mercure London Earls Court Hotel

A large, versatile conference space for up to 600 in a modern event centre with on-site hotel.

From: £65 per person

Capacity: Up to 550 guests

Weddings at Hilton London Syon Park

A grand ballroom with natural light and chandeliers in a scenic park, ideal for large weddings.

From: £18000 per person

Capacity: Up to 400 guests

Weddings at The Chelsea Harbour Hotel

A grand ballroom with marina views, ideal for large weddings and receptions up to 700 guests.

From: £7000 per person

Capacity: Up to 700 guests

Weddings at The Waterfront at Brentford Lock

Bright, flexible waterside venue for events and weddings, with panoramic views and hotel accommodation.

From: £4800 per person

Capacity: Up to 700 guests

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