Dining at SEA LIFE London Aquarium

An immersive undersea venue in central London, ideal for themed parties, dinners, and cocktail events.

From: £4500

Capacity: Up to 140 guests

Business at The Royal Horseguards Hotel and One Whitehall Place

A historic, Grade I listed venue with a large suite for events up to 170, overlooking the Thames.

From: £135

Capacity: Up to 240 guests

Events at Riverside Rooms

Interconnected oak-panelled rooms with Thames views, ideal for conferences, dinners, and themed events near London Eye.

From: £130.35 per person

Capacity: Up to 350 guests

Events at 116 Pall Mall

Opulent ground floor room with terrace in a historic Georgian building. Ideal for dinners and weddings.

From: £60

Capacity: Up to 300 guests

Weddings at The May Fair Hotel, A Radisson Collection Hotel

From: £99 per person

Capacity: Up to 220 guests

Weddings at Altitude London

From: £85 per person

Capacity: Up to 550 guests

Events at Six Park Place

A grand, wood-panelled event space in a heritage setting. Ideal for conferences, dining, and receptions.

From: £2000

Capacity: Up to 200 guests

Events at Corinthia London

A grand, elegantly restored ballroom in a luxury hotel, perfect for weddings and corporate events.

From: £5000

Capacity: Up to 350 guests

Weddings at No. 4 Hamilton Place

A versatile venue in Mayfair with Edwardian elegance, a modern theatre, and a stunning roof terrace.

From: £3500

Capacity: Up to 300 guests

Events at ARBORETUM

A serene, naturally lit lounge in a central London members club, ideal for meetings and events.

From: £2500

Capacity: Up to 200 guests

What licences do I need for a 100-person event in Westminster?

For alcohol sales and late hours (beyond 11 pm), you’ll need a Temporary Event Notice via Westminster City Council. A sound amplification licence applies if DJs exceed 85 dB. Always confirm fire-risk assessment and public liability insurance (min £5 million).

How far in advance should I book a venue for 100 guests in Westminster?

Secure a popular Westminster venue 6–9 months ahead, especially for weekend dates. Corporate parties or holiday season bookings may require 9–12 months’ notice. Mid-week summer slots can be booked 3–4 months in advance.

What insurance do I need for a 100-person party venue hire?

Public liability insurance of at least £5 million is standard—covering guest injury or property damage. If you’re contracting external caterers or entertainers, ensure they hold employer’s liability and product liability cover too.

What’s a reasonable per-head catering budget for 100 guests?

Budget £100–£150 per head for a three-course meal with wine service, canapés and a buffet station. Finger-food-only receptions start at £50 per head. Always factor service charges (10–15%) and VAT.

What deposit is required to secure a 100-person party venue?

Venues in Westminster typically ask for a 25% deposit of the estimated minimum spend—so £1,250–£3,750 up-front. The balance is due 6–8 weeks before the event. Check refund and force-majeure clauses.

What is the minimum spend to hire a 100-person venue in Westminster?

Expect a minimum spend of £5,000–£15,000 for full evening hire at central Westminster venues. Weekend evenings (Fri–Sat) sit at the upper end. This usually includes venue hire, basic AV, furniture and staffing—but excludes catering and bar tabs.

How should I layout seating and standing areas for 100 guests?

Plan 60% seating (round or banquet tables) and 40% standing/lounge zones. E.g., 8×10-seat round tables (10 ft diameter) occupy 800 sq ft; leave 600 sq ft for a bar station, buffet line and dancefloor. Mark clear aisles of 3 ft wide for service access.

How much space is needed for 100 party guests?

Allocate at least 1,200 sq ft for a seated reception or 1,500 sq ft for a mix of seating and mingling. That’s 12 sq ft per guest seated theatre-style, rising to 15 sq ft for standing areas and buffets. Always verify fire-exit routes and service zones.

How big should a room be for 100 people at a party?

A 1,500 sq ft room (approx. 140 m²) accommodates 100 guests comfortably, allowing for a dancefloor or buffet station. For a seated dinner, 1,200 sq ft with 10 sq ft per person works; add 300 sq ft for service areas and flow.

Which transport links serve Westminster party venues best?

Victoria (Circle, District, Victoria lines) and Westminster (Circle, District, Jubilee) tube stations are each within a 5-minute walk. Coaches/supershuttles can use Victoria Coach Station. Taxi ranks at Broadway and Strutton Ground ensure quick egress after 11 pm.