At a Glance
- Legal name
- Improbable Worlds Ltd.
- Jurisdiction
- England and Wales
- Ownership
- private
- Employees
- 500-1000
- Revenue (est.)
- $50M-$100M
- Headquarters
- 30 Farringdon Road, London, EC1M 3HE, United Kingdom
Improbable is a London-headquartered simulation and virtual-world technology company founded in 2012 by Herman Narula, Rob Whitehead, and Peter Lipka while at the University of Cambridge.
Improbable is a London-headquartered simulation and virtual-world technology company founded in 2012 by Herman Narula, Rob Whitehead, and Peter Lipka while at the University of Cambridge. The company built SpatialOS, a distributed cloud platform designed to run massive multiplayer game worlds and complex simulations such as defence training environments. Improbable became one of the highest-profile UK unicorns of the 2010s when it raised $502 million from SoftBank Vision Fund in 2017 at a reported valuation of more than $2 billion, making it one of the largest UK Series B rounds on record. The principal UK entity, Improbable Worlds Ltd., is a private limited company registered at Companies House. The company subsequently expanded into defence simulation through a separate subsidiary, Improbable Defence, and into web3 and metaverse infrastructure through MSquared. Improbable has had a turbulent commercial history, with SpatialOS adoption among games studios slower than initial pitches anticipated and significant restructuring across business lines, but the defence and simulation lines have continued to win UK Ministry of Defence and US Department of Defense contracts. The company remains private and is one of the few UK tech businesses to have built deep relationships with the UK and US defence-industrial bases.
- 1
Restructuring move
Improbable is a structurally interesting case for several reasons that bear on UK corporate-structure choices. First, the 2017 SoftBank round, at the time the largest Series B in European tech history, demonstrated that UK Ltds can accommodate single-investor mega-rounds without immediate restructuring under a US top-co; SoftBank's investment was made into Improbable Worlds Ltd. as a UK English-law preferred share class, with all rights, ratchets, and protective provisions captured in the articles filed at Companies House.
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Parent-subsidiary layout
Second, the company's subsequent diversification into defence created a structural choice between operating Improbable Defence as a division of the main UK Ltd, a separate subsidiary, or a fully ring-fenced entity with its own security clearances. Improbable opted for a subsidiary structure that supports National Security and Investment Act 2021 compliance, MOD List X facility security clearances, and UK CMA scrutiny under the foreign-direct-investment regime. Third, Improbable's metaverse subsidiary MSquared and its associated MML token raised difficult questions about how UK companies should structure crypto-economic ventures when UK FCA registration for crypto-asset firms remains tightly scoped.
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Capital markets path
Fourth, Improbable's growth predates the EIS gross-asset thresholds becoming binding for most rounds, meaning early angel investors did benefit from EIS relief, while later SoftBank capital was institutional and outside the scheme. Improbable has not pursued an IPO; AIM is unlikely given scale and capital intensity, and the LSE Main Market or a US listing remain theoretical future options. Reverse-takeover into a listed cash shell is a route specifically used by smaller UK tech companies seeking liquidity but is rarely chosen by unicorns of Improbable's scale.
Replicate Improbable's structure in 4 steps
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Improbable Worlds Ltd
Improbable Worlds Ltd.
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is a private limited company incorporated in England and Wales and registered at Companies House, headquartered in Farringdon, London.
Parent-subsidiary layout
The group operates Improbable Defence as a subsidiary serving UK MOD and US DoD customers under appropriate security clearances, and MSquared as the metaverse and virtual-worlds infrastructure subsidiary.
Parent-subsidiary layout
SoftBank Vision Fund holds a substantial preferred-share position from the 2017 round, with full persons-with-significant-control disclosures filed at Companies House. The defence subsidiary structure aligns with National Security and Investment Act 2021 expectations and supports List X facility security clearances. The company is not listed on any public exchange.
Recent News & Filings
- Robert Hill: An improbable African American victory at the 1936 Hitler olympics - New Pittsburgh CourierNew Pittsburgh Courier · 29 Apr 2026
- Oilers’ start powers Game 5 win, the big dogs came to play, and the improbable comeback moves ahead - Oilers NationOilers Nation · 29 Apr 2026
- Jalen Brunson leads Knicks as the NBA’s most improbable superstar - The Athletic - The New York TimesThe New York Times · 29 Apr 2026
- Joel Embiid saves the Sixers, Quentin Grimes wakes up and other things we learned from improbable Game 5 win - Inquirer.comInquirer.com · 29 Apr 2026
- Spurs Spanish-language radio voice Paul Castro reflects on improbable journey - San Antonio Express-NewsSan Antonio Express-News · 28 Apr 2026
Frequently Asked Questions
Where is Improbable registered?
Improbable Worlds Ltd. is a private limited company incorporated in England and Wales and registered at Companies House, with its head office in Farringdon, London.
Did SoftBank invest in Improbable?
Yes. SoftBank Vision Fund led a $502 million round in Improbable in 2017, at the time the largest Series B in European tech history, and SoftBank holds a substantial preferred-share position disclosed at Companies House.
What is Improbable Defence?
Improbable Defence is a UK subsidiary that delivers simulation and synthetic-environment software to the UK Ministry of Defence and US Department of Defense, operated as a separate entity to support security clearances and FDI compliance.
Is Improbable planning to list?
Improbable has not announced a listing. Future routes could include the LSE Main Market under the 2024 reformed regime or a US listing, although the company remains private.
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