Do you charge booking fees?

No. Our venue-finding service is completely free for event organisers — we are paid by the venues we partner with, never by you.

How many venues are listed?

Over 25,000 verified conference venues, meeting rooms, hotels and unique event spaces across 18 countries.

How fast will I receive proposals?

Tailored proposals are typically delivered within 2 hours during UK business hours. VenuClaw, our AI assistant, is available 24/7.

Who is behind InternationalVenues.com?

InternationalVenues.com is operated by Jigsaw Conferences Ltd — a UK venue-finding agency trusted by government, FTSE 100 and procurement teams since 2003. ISO 27001 certified.

Do you cover venues outside the UK?

Yes. We source venues across Europe, the Middle East, the Americas and Asia-Pacific. Most enquiries are sourced within 2 working hours regardless of region.

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London vs Portsmouth

Conference Venues Comparison

Compare 721 conference venues in London with 14 in Portsmouth. Real data from 735+ verified venues.

Total Venues

London

Portsmouth

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Head-to-Head: London vs Portsmouth

Metric

London

Portsmouth

Total Venues

721

Leads

Avg Capacity

1,003

Leads

544

Max Capacity

100,000

Leads

2,500

Venue Variety

119

Leads

Avg Theatre

1,003

Leads

544

Venue Type Breakdown

London

Hotel

398

Conference Centre

Business Centre

conference-center

Luxury Hotel

Portsmouth

Hotel

Concert Hall & Conference Centre

hotel-conference

University Conference Centre

Conference Centre

Top Conference Venues in Each City

London

Earls Court Exhibition Centre

Exhibition Centre

Up to 100,000

West Ham United Stadium (London Stadium)

Stadium & Event Venue

Up to 66,000

Tottenham Hotspur Stadium Events & Conferences

Stadium Conference & Event Venue

Up to 62,850

ExCeL London

Exhibition Centre

Up to 40,000

Lord's Cricket Ground

Sports Venue & Conference Centre

Up to 31,000

Earls Court & Olympia

Exhibition Centre

Up to 30,000

Browse all London venues

Portsmouth

The Guildhall

Concert Hall & Conference Centre

Up to 2,500

Mountbatten Centre

Sports & Events Centre

Up to 1,500

University of Portsmouth

University Conference Centre

Up to 800

Portsmouth Marriott Hotel

Hotel

Up to 500

Boathouse 7

Conference Centre

Up to 350

Holiday Inn Portsmouth

Hotel

Up to 350

Browse all Portsmouth venues

Frequently Asked Questions

London offers the larger selection with 721 conference venues compared to 14 in Portsmouth. Both cities provide a strong range of options for event organisers looking for conference venues.

The average maximum capacity in London is approximately 1003 guests, while Portsmouth averages around 544 guests. This makes London better suited for larger events.

Yes. The largest venue capacity in London is up to 100,000 guests, and in Portsmouth up to 2,500 guests. Both cities cater to events of all sizes, from intimate boardroom meetings to major conferences.

London offers 119 different venue types including Hotel, Conference Centre, Business Centre, conference-center. This diversity makes it easy to find the perfect space for your event.

Portsmouth offers 7 different venue types including Hotel, Concert Hall & Conference Centre, hotel-conference, University Conference Centre. Event planners can choose from a wide variety of spaces.

Consider your event size, budget, and delegate travel. London has 721 conference venues with larger average capacities. Portsmouth offers 14 options with excellent accessibility. Use our free venue-finding service to get tailored recommendations for both cities.