Series A Blockchain companies in London

Companies building L1s, L2s, wallets, infra, and apps on public blockchains. Filtered to Series A-stage companies headquartered in London.

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Built from a search like: “Top Series A Blockchain companies in London”

Ranked by current headcount across Series A Blockchain companies in London. Refreshed monthly.

1
PIB Insurance Brokers· London, England, United Kingdom
PIB Insurance Brokers (PIB) are a leading insurance broker with access to risk management services. We work with both businesses and individuals, making a real difference to your requirements through our combined skills, experience and partnership approach.At PIB Insurance Brokers, we invest time in getting to know you and can build bespoke solutions around your unique goals and challenges to provide security and peace of mind. Clients range from individuals and sole practitioners to small and medium-sized enterprises as well as large corporations.PIB Insurance Brokers is part of PIB Group, a dynamic group of specialist insurance advisory businesses. Our knowledge and experience is as diverse as our customers and their businesses. Through our strong partnerships with leading insurers, we can provide solutions to cater for all needs.PIB Insurance Brokers can offer all forms of commercial insurances and have recognised expertise in a wide range of specialist sectors.Our commercial offering is complemented by our Private Clients team, who deliver personally tailored insurance that is uniquely designed for you and your needs. Our experts specialise in arranging bespoke insurance programmes to protect and safeguard your assets and lifestyle. We understand how to provide an excellent and confidential service. Feel free to get in contact by sending us an email: info@pib-insurance.com or contact your local office https://www.pib-insurance.com/find-a-branch
- Series A
- 546 employees
- Founded 2014
2
Paymentology· London, England, United Kingdom
Paymentology is a global issuer processor that enables fintechs, digital banks and retail banks to launch, manage and scale card programmes around the world. Built on Lume, the platform for growth, Paymentology processes billions of transactions for clients globally, across 65+ countries and 14 time zones. With a deep understanding of local markets and the scale of a truly global operating footprint, Paymentology combines regional expertise with the flexibility clients need to build momentum, enter new markets and unlock unstoppable growth.Protect yourself against recruitment fraud. Here are the FAQs to assist in how to navigate such: https://www.linkedin.com/redir/suspicious-page?url=https%3A%2F%2Fwww%2epaymentology%2ecom%2Fen%2Fabout-us%2Fcareers
- Series A
- 411 employees
- Founded 2015
3
R3· London, England, United Kingdom
R3 is a leading provider of RWAs and digital asset on Solana. For more information, visit www.r3.com.
- Series A
- 333 employees
- Founded 2015
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4
BCB Group· London, England, United Kingdom
BCB Group is a leading provider of regulated payments infrastructure for global businesses, delivering payment accounts, FX and trading, digital asset services and 24/7/365 instant settlement through its proprietary network, BLINC. Serving institutional clients worldwide — from payments businesses and fintechs to exchanges, funds and financial institutions — BCB Group is authorised and regulated in the UK, France and Switzerland.Our mission is to deliver trusted infrastructure for global payments. Our vision is to advance money movement.Regulated. Reliable. Real-time.Important Notice: We will never contact you about job opportunities through unofficial LinkedIn profiles or personal accounts. All legitimate recruitment activity comes only from our verified BCB Group company page and official @bcbgroup.io email addresses. If you've been approached by anyone claiming to represent BCB Group outside of these channels, please disregard the message and report the profile to LinkedIn.
- Series A
- 221 employees
- Founded 2017
5
Mojo Mortgages· London, England, United Kingdom
Mojo is the UK's fastest-growing digital mortgage broker of scale.We use cutting-edge tech and expert in-house advisers to make getting a mortgage feel less like the 1980s and more like the 21st Century.That means no taking time off work for appointments in a stuffy broker’s office, no waiting on hold for updates on your application, no piles of paperwork and, most importantly, no fees.At Mojo Mortgages we can compare thousands of deals from across the entire market giving you a personalised mortgage recommendation and a Mortgage in Principle in 15 minutes. What’s more, we’ll handle your entire application for you – making all the necessary phone calls and arrangements for you until your mortgage is in place.Whether they write code or help customers, everyone in our fast-growing team is united by a belief that getting a mortgage doesn’t have to be a headache.For mortgage advice without fees and an application process without fuss, visit us at mojomortgages.comWe are part of RVU - a group of online brands with a mission to empower people and transform industries. For more information, please visit: https://www.rvu.co.uk/
- Series A
- 206 employees
- Founded 2016

6
Deblock· London, England, United Kingdom
The first crypto wallet integrated with a current account.
- Series A
- 162 employees
- Founded 2022
7
Blink Payment· London, England, United Kingdom
Blink Payment is an all-in-one payment platform that helps UK businesses get paid faster, reduce admin, and reconcile with ease, whether it's online, in person, or over the phone, all from one dashboard.We serve SMEs across industries with complex payment needs – including, but not limited to, property management, solicitors, builders and timber merchants, storage and removals, tool and plant hire, and waste management – where getting paid on time genuinely matters.Beyond direct merchants, we partner with software providers to embed our payment infrastructure directly into their platforms. Through our API, software businesses can offer their customers a seamless, fully integrated payment experience, without building it from scratch.Our platform supports cards, open banking, digital wallets, and Direct Debit payments, paylinks, virtual terminals, batch payments, and repeat payments, with integrations into Xero, QuickBooks, and Sage.Trusted by thousands of UK businesses. UK-based support that answers in 6 seconds on average.For merchants: blinkpayment.co.uk/for-merchantsFor referral partners: https://www.blinkpayment.co.uk/referral-partnersFor integration partners: blinkpayment.co.uk/integrations-partners
- Series A
- 134 employees
- Founded 2012
8
Novatus· London, England, United Kingdom
We enable financial services firms to meet their most complex regulatory requirements through specialist technology and expert-led advisory services.
- Series A
- 131 employees
- Founded 2019
9
wamo· London, England, United Kingdom
wamo is a European fintech company focused on making banking, finance, accounts and admin faster, simpler and more human for small businesses.Licensed and regulated by the Finnish Financial Supervisory Authority as a pan-European electronic money institution, wamo delivers the speed and simplicity entrepreneurs demand from a digital bank, plus personalised insight and hands-on human support to make life a little easier when things get complicated.Founded in 2021, wamo has headquarters in Helsinki and London.
- Series A
- 128 employees
- Founded 2021
10
Titanbay· London, England, United Kingdom
Titanbay is the only firm that structures, launches, runs, and trades private markets funds in one place, on purpose-built technology that didn't exist until they built it.Asset managers use Titanbay to bring private markets funds to market and run them at scale. Wealth managers access those funds and trade them through the systems they already have. Titanbay's tech and regulatory infrastructure connects both sides, automating the operational complexity that traditionally fragments the industry.
- Series A
- 110 employees
- Founded 2019

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Find engineers at Series A Blockchain companies in London

Searching for “engineers at top Series A Blockchain companies in London” surfaces this slice of the market. The list above ranks Blockchain companies headquartered in London whose latest disclosed round is Series A, by current headcount, drawn from public LinkedIn and Crunchbase records. With 96 matching companies in Refolk’s index, this is a tight read on where the Blockchain talent in London is heating up.

Three filters at once narrows the field hard. The companies that survive all three - Series A, Blockchain, 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 Blockchain’s next operators and angel investors.

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

Last refreshed: Sun, 13 Sep 2026 16:43:46 GMT

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