IPO SaaS companies in London

Software-as-a-service vendors selling subscription cloud software to other businesses. Filtered to IPO-stage companies headquartered in London.

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Built from a search like: “Top IPO SaaS companies in London”

Ranked by current headcount across IPO SaaS companies in London. Refreshed daily.

1
Deliveroo· London, England, United Kingdom
Deliveroo is an award-winning delivery service founded in 2013 by William Shu and Greg Orlowski. Deliveroo works with approximately 176,000 best-loved restaurants and grocery partners, as well as around 150,000 riders to provide the best food delivery experience in the world. Deliveroo is headquartered in London, with offices around the globe. Deliveroo operates across 9 markets, including Belgium, France, Italy, Ireland, Qatar, Singapore, United Arab Emirates, Kuwait and the United Kingdom.
- Post-IPO equity
- 11.6k employees
- Founded 2013
2
Clarivate· London, England, United Kingdom
Clarivate is a leading global provider of transformative intelligence. We offer enriched data, insights & analytics, workflow solutions and expert services in the areas of Academia & Government, Intellectual Property and Life Sciences & Healthcare. For more information, please visit clarivate.com.
- Post-IPO equity
- 10.2k employees
3
Informa· London, England, United Kingdom
Informa champions specialists working in academic and business-to-business markets, connecting people with knowledge to help them learn more, know more and do more. We’re a leading international events, digital services and academic knowledge business, headquartered in the UK and a member of the UK’s FTSE 100 group of public companies. We’re also home to a fantastic, inclusive community of over 14,000 colleagues across 30 countries, and a place where our colleagues have the freedom and flexibility to bring ideas to life, do work that makes a real impact and discover opportunities to grow.Our businesses include Informa Markets, Informa TechTarget, Informa Connect, Informa Festivals and Taylor & Francis, but if you work in one of the specialist markets we serve, you might also know us through our brands. In Pharma, Medical and Biotech, that includes WHX Dubai, CPHI and EBD; in Tech, Enterprise Connect, AI Summit, Black Hat and GDC; in Natural Products, New Hope Network, Vitafoods and Natural Products Expo; in Beauty & Aesthetics, China Beauty Expo and Premier Beauty; in Finance, SuperReturn International, Money20/20, Finovate and IGM; in Research and Advanced Learning, Routledge and F1000; and many more brands in more markets too.
- Post-IPO equity
- 9.5k employees
- Founded 1998
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4
Sapiens· London, England, United Kingdom
Sapiens is a global leader in intelligent insurance software solutions. With our robust platform, customer-driven partnerships, and rich ecosystem, insurers are empowered to future-proof their organizations with operational excellence in a rapidly changing marketplace. We help insurers harness the power of AI and advanced automation to support core solutions for property and casualty, workers’ compensation, and life insurance, including reinsurance, financial & compliance, data & analytics, digital, and decision management. Sapiens boasts a longtime global presence, serving over 600 customers in more than 30 countries with its innovative SaaS offerings. Recognized by industry experts and selected for the Microsoft Top 100 Partner program, Sapiens is committed to partnering with our customers for their entire transformation journey and is continuously innovating to ensure their success.
- Post-IPO equity
- 5.3k employees
- Founded 1982
5
Playtech· London, England, United Kingdom
Founded in 1999 and premium listed on the Main Market of the London Stock Exchange, Playtech is a technology leader in the gambling industry with over 7900 employees in 20 countriesPlaytech is the gambling industry’s leading software and services supplier and partners with many of the world’s leading regulated online, retail and mobile operators, land-based casino groups, government sponsored entities such as lotteries, and new entrants opening operations in newly-regulated markets. Its business intelligence-driven gambling software offering includes casino, live casino, bingo, poker and sports betting.We are the pioneers of Omni-channel gambling which, through Playtech ONE, offers operators and their customers, a seamless, anytime, anywhere experience across any product, any channel (online, mobile, retail) and any device using a single account and single wallet. It provides marketing expertise, sophisticated CRM solutions and other services for operators seeking a full turnkey solution.The company has won numerous awards including the prestigious Gaming Intelligence Game of the Year award 2018 for its Age of the Gods games that includes slots, table games and live casino.Alongside our own cutting-edge gaming studios and content we license some of the world's most popular brands from Hollywood studios including Warner Bros. Consumer Products on behalf of DC Entertainment, Paramount, Fox, NBC Universal, MGM and many more.Playtech Financials operates both on a B2C and B2B basis. Our B2C focused offering is an established and growing online CFDs broker, operating the brand markets.com. Our B2B offering includes the division's proprietary trading platform, CRM and back-office systems, as well as its liquidity technology platform which provides retail brokers with multi-asset execution, prime brokerage services, liquidity and complementary risk management tools.If you are an ambitious, creative thinker and would like to work for us we want to hear from you!
- Post-IPO debt
- 3.8k employees
- Founded 1999

6
GlobalData Plc· London, England, United Kingdom
In a world drowning in data, we deliver clarity. We exist to help leaders cut through the noise, uncover hidden opportunities, and deliver results that matter.GlobalData operates an intelligence platform that empowers leaders to act decisively in a world of complexity and change.By uniting proprietary data, human expertise, and purpose-built AI into a single, connected platform, we help organisations see what’s coming, move faster, and lead with confidence.Our solutions are used by over 5,000 organizations across the world’s largest industries, providing tailored intelligence that supports strategic planning, innovation, risk management, and sustainable growth.
- Post-IPO debt
- 3.1k employees
- Founded 2016
7
Genius Sports· London, England, United Kingdom
NYSE: GENIGenius is the operating system for modern sport. Building technology and experiences to make sports even better.Our solutions across the global sports ecosystem are underpinned by our next generation big data and artificial intelligence platform, GeniusIQ. By ingesting and computing multiple real-time data feeds, GeniusIQ powers a wide range of functions and applications across sports performance and officiation, fan engagement, advertising, and sports betting.Founded in 2001, Genius Sports is now one of the world’s largest sports technology companies, working with the likes of the NFL, NBA, EPL, FIBA, ESPN, Sky Sports, Flutter, DraftKings and 100s more. We're headquartered in London and New York and have offices Los Angeles, Medellin, Tallinn, Sofia, Singapore, Lausanne, Manchester and Melbourne.Visit our Showcase Pages to discover more about our products.
- Post-IPO equity
- 3.1k employees
- Founded 2001
8
Square Enix· London, England, United Kingdom
About Square Enix, Ltd. Square Enix Limited develops, publishes, distributes and licenses SQUARE ENIX® and TAITO® branded entertainment content in Europe and other PAL territories as part of the Square Enix group of companies. The Square Enix group of companies boasts a valuable portfolio of intellectual property including: FINAL FANTASYTM, which has sold over 185 million units worldwide; DRAGON QUESTTM, which has sold over 88 million units worldwide; and the legendary SPACE INVADERS®. Square Enix Limited is a London-based, wholly owned subsidiary of Square Enix Holdings Co., Ltd.More information on Square Enix Limited can be found at https://square-enix-games.com/Our careers site can be found at https://www.square-enix-games.com/en_GB/careers
- Post-IPO equity
- 903 employees
- Founded 2008
9
Cazoo· London, England, United Kingdom
Cazoo. Right for You. Search over 230,000 used cars from 6,000 dealers nationwide.
- Post-IPO debt
- 874 employees
- Founded 2018
10
ATG (Auction Technology Group)· London, England, United Kingdom
A global technology company with over 450 employees, ATG is transforming the way billions of pounds, euros and dollars' worth of items are bought and sold globally via auction. ATG is headquartered in London with additional offices in the US, Mexico and Germany, and is listed on London Stock Exchange. We operate the world’s leading marketplaces and auction services for curated online auctions, seamlessly connecting buyers from around the world to trusted sellers across two major sectors: Industrial & Commercial, and Art & Antiques. We provide leading online marketplace capabilities, and a range of value-added tools and services that maximise value on lots sold and increase efficiency. ATG’s marketplaces include: Art & Antiques: LiveAuctioneers - North America's favourite destination for fine and decorative art, antiques, vintage collectables and luxury goods. thesaleroom.com - Europe's leading marketplace for fine art & antiques auctions. lot-tissimo - Germany's foremost fine art & antiques marketplace. EstateSales.NET – a leading US estate sales listing site, providing a platform to facilitate estate sales across the US Chairish – a leading global online marketplace for vintage furniture, décor and art. Pamono – a leading European marketplace for furniture, lighting, art, accessories and jewellery. Industrial & Commercial Proxibid - the largest online auction marketplace in North America, listing items across 16 categories from agricultural machinery to classic cars. BidSpotter.com and BidSpotter.co.uk – the world leaders in industrial online auctions. Together the sites provide a world-leading marketplace for industrial, manufacturing and food processing equipment auctions. i-bidder.com - the UK’s leading auction marketplace for returned and surplus consumer product.
- Post-IPO debt
- 667 employees
- Founded 1971

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Find engineers at IPO SaaS companies in London

Searching for “engineers at top IPO SaaS companies in London” surfaces this slice of the market. The list above ranks SaaS companies headquartered in London whose latest disclosed round is IPO, by current headcount, drawn from public LinkedIn and Crunchbase records. With 26 matching companies in Refolk’s index, this is a tight read on where the SaaS talent in London is heating up.

Three filters at once narrows the field hard. The companies that survive all three - IPO, SaaS, in London - are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become SaaS’s next operators and angel investors.

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Refolk pulled SaaS companies headquartered in London whose latest disclosed funding round is IPO from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes once a day.

Last refreshed: Wed, 05 Aug 2026 14:39:27 GMT

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