Profile · Founder · London
Paul
Archer
He runs a brand-advocacy software company from London. Before that, he bought a 1992 London taxi off eBay and drove it around the world. The two things are more related than they sound.
He runs a brand-advocacy software company from London. Before that, he bought a 1992 London taxi off eBay and drove it around the world. The two things are more related than they sound.
Paul Archer's argument, which he has been making for close to a decade on podcasts and stages and in front of chief marketing officers, is that consumer brands have spent the last twenty years renting attention when they could have been earning it. The tools have improved, the auction has gotten more expensive, the yield has gotten worse. His fix is Duel, a London SaaS company he co-founded with the games developer Naio Tsarouchis in 2017, which treats brand advocates - customers, creators, employees, ambassadors - as an operational layer rather than a warm feeling. Charlotte Tilbury uses it. So do Lush, ELEMIS, Victoria's Secret, Abercrombie & Fitch, Pandora and Dove. In September 2025 the company raised a $16M Series A co-led by Molten Ventures and Bright Pixel Capital, with a follow-on cheque from Peter Bauer, who founded Mimecast. Total funding sits north of $25M.
It is possible to describe Duel without mentioning the taxi. It is not advisable.
The plan, hatched by three Aston University friends - Archer, Johno Ellison and Leigh Purnell - was to circumnavigate the planet in a London black cab. The vehicle was a 1992 Fairway Driver they named Hannah. The route left the London Transport Museum on 17 February 2011 and returned to the same building on 11 May 2012. Along the way they raised more than £20,000 for the British Red Cross, broke the Guinness records for longest journey by taxi and highest altitude reached by taxi, and left the meter running the entire time.
They also, at some point, wrote a book about it. It's on the Meter: One Taxi, Three Mates and 43,000 Miles of Misadventures around the World was published in 2016 and does not undersell the misadventures.
Be a great brand. Care deeply about your customers, get your product in their hands and remind them to talk about you. And if you do that right, you will have this incredible engine of growth, which is perfect for the 2020s and beyond.— Paul Archer, on the Building Brand Advocacy podcast
Duel sells software to consumer brands that want to activate a specific set of people - their existing customers, their fans, their creators, the friends of their friends - as a marketing channel with an addressable ID, a measurable conversion, and an operating rhythm. The pitch, which the company has been refining since 2017, is that this is not a substitute for paid media so much as a durable alternative to it. Word of mouth compounds. Auctions do not.
The platform handles the parts that are hard when you try to do this yourself: recruiting advocates, briefing them, moderating what they produce, tracking who sold what, paying them, and reporting the whole thing to a finance team that would like a spreadsheet. The company describes itself as B-Corp certified and organises its culture around what its careers page calls "high trust, tight ship."
Archer's co-founder Naio Tsarouchis came out of viral games, which is another way of saying he has spent a career thinking about how to make people share things. That is, more or less, the product.
The client list, publicly stated, includes Charlotte Tilbury, Lush, ELEMIS, Victoria's Secret, Abercrombie & Fitch, Pandora and Dove. The Series A press release from September 2025 leans on the retail set. The company's About page leans on the certification. Both are consistent with a business that has decided its moat is patience.
Molten Ventures (co-lead)
Bright Pixel Capital (co-lead)
Peter Bauer (Mimecast founder)
Sep 2025 · $16M · Total funding >$25M
Reads Business and Psychology at Aston University. Meets Johno Ellison and Leigh Purnell.
Launches the "It's on the Meter" round-the-world taxi expedition from the London Transport Museum in a 1992 Fairway Driver named Hannah.
Returns to the same museum 15 months later, having driven 43,319 miles through 50 countries. Two Guinness World Records.
Publishes It's on the Meter, a best-selling account of the trip, co-written with Johno Ellison and Leigh Purnell.
Co-founds Duel with viral games developer Naio Tsarouchis. Advises brands on word-of-mouth strategy in parallel.
Duel closes a $16M Series A co-led by Molten Ventures and Bright Pixel. Peter Bauer, Mimecast founder, participates.
"We have a flywheel, basically, a flywheel of growth, of advocacy that drives it." Archer talks about Duel's product the way an operations executive talks about a factory. The metaphor is not accidental.
Before Duel, Archer served as an ambassador for more than 30 adventure brands. The lesson from the taxi trip, he has said, was that strangers will help you if you ask well. That is also the lesson of the platform.
The phrase appears on Duel's careers page. The company is B-Corp certified, which is a slower and more paperwork-intensive way of running a startup and which Archer has chosen to do anyway.
Businesses built for Advocacy can change the world.— Duel, mission statement
The modern digital ad auction is a mature market. CPMs rise. Return diminishes. Consumer trust in paid channels erodes at a slow but reliable clip. The brands that seem to be winning through this decade - Lush is a good example - lean disproportionately on people who like the product enough to tell other people about it. This is not a new observation. What is new, Archer would argue, is the software layer that makes it operable at the scale a retail marketer needs.
Duel is one bet on that thesis. Its founders have paired an atypical CV - adventurer, best-selling author - with the ordinary discipline of building enterprise SaaS. The Series A press release quotes retail brands. The About page quotes philosophy. Both are true.
Archer's argument for why he is the right person to make this bet begins, more or less, with the taxi. If a 1992 black cab can be driven from London to London the long way, on the goodwill of strangers, then the goodwill of customers - real customers, who already bought the thing - is a serviceable growth channel.
Whether he is right is the sort of question a $16M Series A is designed to answer over the next several years.
The British founder and CEO of Duel, a brand advocacy SaaS platform based in London. He is also a two-time Guinness World Record holder and a best-selling author.
Duel helps consumer brands turn customers, creators and fans into a measurable growth channel through advocacy, affiliate and ambassador programs.
Two: longest journey by taxi and highest altitude reached by taxi, both set during the "It's on the Meter" expedition of 2011-2012.
Publicly named clients include Charlotte Tilbury, Lush, ELEMIS, Victoria's Secret, Abercrombie & Fitch, Pandora and Dove.
More than $25M in total, including a $16M Series A closed in September 2025, co-led by Molten Ventures and Bright Pixel.