Who is Jack Waley-Cohen?

Jack David Waley-Cohen is a British operator, quiz professional and co-founder of what3words. He remains its COO and director, founded QuizQuizQuiz, and co-edits questions for Only Connect.

He attended Eton and earned an Oxford BA (Hons) in Experimental Psychology from 1998 to 2001, while serving as president of the Oxford University Quiz Society.

What did he do before what3words?

He analysed European utility debt at Deutsche Bank, led operations, finance, IT and people at Lingo24, founded QuizQuizQuiz and co-founded Property Detective.

Why did he join what3words?

Chris Sheldrick and Mohan Ganesalingam had the coordinate-to-words concept but wanted his experience scaling a multilingual company. He helped with operating structure, language, early design and branding.

Who founded what3words?

The most complete public record supports Chris Sheldrick, Mohan Ganesalingam, Jack Waley-Cohen and Michael Dent as the early co-founder group. Official narratives often shorten the roster to the first three; Dent identifies himself as the fourth co-founder and first CTO.

What exactly did Waley-Cohen contribute?

He brought translation-company scaling and language expertise, helped shape memorable-word usability and early design, took the founding COO remit across HR, finance, technology and sales, and is a named co-inventor on core and suggestion-system patent families. The algorithm and infrastructure were collaborative, not his sole work.

What does he do as COO?

He describes the role as plugging gaps, tracing knock-on effects and coordinating cross-functional work such as international legal setup, visas, office leases, facilities, finance and leadership delegation.

Is he still at what3words?

Yes. His current profile lists him as co-founder and COO, Companies House lists him as an active director, and what3words' German imprint lists him as a managing director.

What are major company milestones during his tenure?

They include the core patent, multilingual rollout, Mercedes-Benz production integration, broad logistics and emergency-service use, more than 60 million reported app downloads, over 1,000 reported paying SMEs and the Swiftcomplete acquisition. These are company and team outcomes.

Why is what3words criticized for emergency use?

Rescuers, researchers and a peer-reviewed study document spelling, pronunciation, plural and nearby-confusability risks, especially through noisy communication chains. The company says AutoSuggest, geographic prompts and deliberate word shuffling reduce errors and that many responders report successful use.

What was the open-source controversy?

what3words used copyright and trademark enforcement against a reverse-engineered compatible implementation and sent a legal demand to a researcher sharing it. The company said it targeted proprietary software and binary data, not criticism. No evidence reviewed makes Waley-Cohen the individual decision-maker.

Is what3words profitable?

Not in the latest filed year reviewed. Reporting on 2024 accounts shows about £2.1 million revenue and a £10.6 million pre-tax loss, although sales doubled and losses narrowed.

What is his quiz work?

He founded QuizQuizQuiz, was a first-series Only Connect finalist, became an Only Connect question editor with David McGaughey, writes for other quiz shows, and has published two Only Connect books with another due in October 2026.

Does Jack Waley-Cohen invest personally?

No named personal angel investment was verified. He is a director and person with significant control at Hereliving Investments Unlimited, but its underlying holdings, amounts and activity are not public. what3words investors are not his portfolio.

Jack David Waley-Cohen

Founder

Co-founder at Homepage von what3words

London, England, United Kingdom

FoundedHomepage von what3words

About

Jack David Waley-Cohen studied at Eton and read Experimental Psychology at Oxford, where he led the university quiz society. After two years analysing European utility debt at Deutsche Bank, he joined translation company Lingo24 as its fifth employee and Operations Director, overseeing operations, finance, IT and people as the business grew from five home-workers to more than 150 staff across four continents. In parallel he founded QuizQuizQuiz, turning a 2003 event into a long-running quiz-events and content business, and later co-founded Property Detective. Chris Sheldrick and Mohan Ganesalingam approached him in early 2013 for operating and language expertise after conceiving a word-based alternative to long coordinates. Waley-Cohen helped make early design and branding decisions, proposed or developed the memorable-word approach, contributed to word-list usability, became founding COO, and is a named co-inventor with Sheldrick and Ganesalingam on the core what3words patent family and a later AutoSuggest patent. Michael Dent separately documents being a fourth co-founder and first CTO, so the dossier preserves the four-founder record despite frequent three-founder shorthand. Waley-Cohen says his early remit spanned HR, finance, technology and sales; at scale his COO work became cross-functional coordination, international setup, legal and financial risk, facilities and leadership delegation. He remains an active UK director and German managing director, and became a Swiftcomplete director around the address-validation company's acquisition. what3words has achieved substantial automotive, delivery, emergency-service and language adoption, acquired Swiftcomplete, and reported more than 60 million app downloads and more than 1,000 paying SMEs in its 2026 campaign. Those are company outcomes, not his sole achievements. Truth-first context remains material: peer-reviewed and responder evidence identifies confusable-address and transmission risks in safety-critical use; critics object to proprietary control and legal enforcement against an open-source reimplementation; and 2024 accounts showed only about £2.1 million revenue, a £10.6 million pre-tax loss and reduced headcount before a 2026 blended crowdfunding round at a much lower valuation than the reported 2020 peak. No reviewed evidence makes those company issues personal misconduct by Waley-Cohen. Outside what3words he remains a visible quiz writer and editor, with television appearances, radio work and published Only Connect books. His public corporate record includes the family-linked Hereliving Investments Unlimited, classified as investment-trust activity, but no named underlying holding, personal angel deal, check-size mandate, investment exit or founder-liquidity event was verified.

Invests in

Enterprise SoftwareLogistics & Supply Chain

Co-founder at Homepage von what3words

Intro paths

→

In turn, Jack can intro founders to Homepage von what3words's investors below.

Homepage von what3words's investors · 11

Beyond1435 GmbHBerlin · $1.1M – $4.3M checks Channel 4 VenturesLondon · $1.3M – $6.3M checks Fraser McCombs CapitalBoulder · $5M – $15M checks German Media PoolBerlin · $550K – $5.5M checks Ingka InvestmentsLeiden Intel CapitalSanta Clara · $1M – $20M checks JamJar InvestmentsLondon · $630K – $6.3M checks Perivoli InnovationsSt. Helier Salica InvestmentsLondon Sony Ventures CorporationTokyo VentureSouqAbu Dhabi · $250K – $50M checks

Co-founders at Homepage von what3words

Chris SheldrickFounder

Mohan GanesalingamCo-founder

Experience

Deutsche BankHigh Grade Credit Analyst, European utilities debt
Hereliving Investments UnlimitedDirector and Person with Significant Control
Lingo24 / 24 Translation Services LimitedOperations Director; Director and Company Secretary of the UK entity
Mousetrap Productions LimitedDirector
Only ConnectSenior Question Writer, then Question Editor with David McGaughey
Property DetectiveCo-Founder and Non-Executive Director
QuizQuizQuizFounder; Managing Director; Quizmaster and Question Writer
Swiftcomplete LtdDirector
what3wordsCo-Founder and Chief Operating Officer
what3words GmbHManaging Director
what3words LimitedDirector

Founder fit — who Jack backs

Founders may find operating, hiring, finance, international expansion, culture, category creation, language/localization, B2B2C integration and practical product simplification experience relevant. Personal capital fit is unproven and should not be presumed.

Strong signalsSimple human interface over complex infrastructureLanguage, localization or voice usabilityA concrete user problem observed directlyMission-driven team with unusually high belief and ownershipCross-functional operating gaps requiring finance, HR, systems and legal coordinationInternational rollout with localization, visas, offices and contractsEnterprise distribution layered onto free consumer utilityMemorability, lateral thinking and carefully edited contentFounders willing to delegate to specialist leaders as scale increases

['Claims that Mercedes-Benz, Intel, Sony, ITV, Ingka, Crowdcube participants or other what3words funders are his investments', "Claims that what3words' Swiftcomplete acquisition is a personal investment or exit", "Claims that Property Detective's angel funding proves Waley-Cohen personally supplied capital", "Claims that Hereliving's SIC code reveals named portfolio companies or a public angel mandate", 'Pitches relying on a disclosed personal check size, preferred stage or active investment program', 'Safety-critical products without independent validation, error handling and fallback systems', 'Founders unwilling to hire and delegate to specialist HR, finance, commercial or technical leaders', 'Vision-only pitches that ignore current economics, legal obligations and operating risk']

How to pitch

Lead with the real user failure, why the proposed interface is easier to remember or operate, and the evidence that customers will adopt and pay. Explain internationalization, language quality, error cases, enterprise distribution, culture and the precise cross-functional help sought. Ask whether he is open to advice, a board role or personal capital rather than treating those as interchangeable. Do not list what3words investors as his portfolio or infer liquidity from the 2026 blended round.

Sectors: Location technology and geocoding, Language, localization and translation technology, Enterprise APIs and B2B2C software, Logistics, automotive and address validation, Property information, Quiz, trivia, television and publishing content, Operational tooling for international scale

Editorial inference from Jack's portfolio, writing and public record — not a published mandate.

Investment themes

10 documented themes from Jack's essays, talks and portfolio, grouped by what they say about founders.

▶More themes10

Human-friendly words as an interface to precise coordinates
Language quality, memorability and culturally appropriate word lists
COO work as gap-filling and knock-on-effect management
Mission belief and attitude as core hiring criteria
Early people leadership and culture stewardship
Delegation from founder generalism to specialist leadership
Vision-led fundraising with candid recognition of weak early metrics
International operations, legal exposure and flexible liabilities
Gettable, verified questions with play-along value
Lateral thinking and connection-making

Podcasts & interviews

featuring Jack David Waley-Cohen

Interview with Jack Waley-Cohen, co-founder of what3words

uhy-uk.com · uhy-uk.com

A conversation with what3words Co-Founder Jack Waley-Cohen

uhy-uk.com · uhy-uk.com

What does a startup COO actually do?

sifted.eu · sifted.eu

Addressing The World — A Coordinate System For Humans

mapscaping.com · mapscaping.com

Working lives: Quiz editor

rts.org.uk · rts.org.uk

The Museum of Curiosity, Series 10 Episode 3

bbc.co.uk · bbc.co.uk

4 more appearances

Writing

Top performers on UK broadcast quizzes

Understanding the Pub Quiz

Only Connect: The All-New Official Quiz Book

Only Connect: The Difficult Second Quiz Book

Only Connect: The Official Quiz Book

A method and apparatus for identifying and communicating locations

Frequently asked questions

Who is Jack Waley-Cohen?: Jack David Waley-Cohen is a British operator, quiz professional and co-founder of what3words. He remains its COO and director, founded QuizQuizQuiz, and co-edits questions for Only Connect.
What did he study?: He attended Eton and earned an Oxford BA (Hons) in Experimental Psychology from 1998 to 2001, while serving as president of the Oxford University Quiz Society.
What did he do before what3words?: He analysed European utility debt at Deutsche Bank, led operations, finance, IT and people at Lingo24, founded QuizQuizQuiz and co-founded Property Detective.
Why did he join what3words?: Chris Sheldrick and Mohan Ganesalingam had the coordinate-to-words concept but wanted his experience scaling a multilingual company. He helped with operating structure, language, early design and branding.
Who founded what3words?: The most complete public record supports Chris Sheldrick, Mohan Ganesalingam, Jack Waley-Cohen and Michael Dent as the early co-founder group. Official narratives often shorten the roster to the first three; Dent identifies himself as the fourth co-founder and first CTO.
What exactly did Waley-Cohen contribute?: He brought translation-company scaling and language expertise, helped shape memorable-word usability and early design, took the founding COO remit across HR, finance, technology and sales, and is a named co-inventor on core and suggestion-system patent families. The algorithm and infrastructure were collaborative, not his sole work.
What does he do as COO?: He describes the role as plugging gaps, tracing knock-on effects and coordinating cross-functional work such as international legal setup, visas, office leases, facilities, finance and leadership delegation.
Is he still at what3words?: Yes. His current profile lists him as co-founder and COO, Companies House lists him as an active director, and what3words' German imprint lists him as a managing director.
What are major company milestones during his tenure?: They include the core patent, multilingual rollout, Mercedes-Benz production integration, broad logistics and emergency-service use, more than 60 million reported app downloads, over 1,000 reported paying SMEs and the Swiftcomplete acquisition. These are company and team outcomes.
Why is what3words criticized for emergency use?: Rescuers, researchers and a peer-reviewed study document spelling, pronunciation, plural and nearby-confusability risks, especially through noisy communication chains. The company says AutoSuggest, geographic prompts and deliberate word shuffling reduce errors and that many responders report successful use.
What was the open-source controversy?: what3words used copyright and trademark enforcement against a reverse-engineered compatible implementation and sent a legal demand to a researcher sharing it. The company said it targeted proprietary software and binary data, not criticism. No evidence reviewed makes Waley-Cohen the individual decision-maker.
Is what3words profitable?: Not in the latest filed year reviewed. Reporting on 2024 accounts shows about £2.1 million revenue and a £10.6 million pre-tax loss, although sales doubled and losses narrowed.
What is his quiz work?: He founded QuizQuizQuiz, was a first-series Only Connect finalist, became an Only Connect question editor with David McGaughey, writes for other quiz shows, and has published two Only Connect books with another due in October 2026.
Does Jack Waley-Cohen invest personally?: No named personal angel investment was verified. He is a director and person with significant control at Hereliving Investments Unlimited, but its underlying holdings, amounts and activity are not public. what3words investors are not his portfolio.