Y Combinator Fintech portfolio in London

The most prolific seed accelerator in the world, batch class twice a year. Filtered to Fintech companies headquartered in London.

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Built from a search like: “Y Combinator-backed Fintech companies in London”

Ranked by current headcount across Y Combinator-backed Fintech companies in London. Refreshed monthly.

1
Monzo· London, England, United Kingdom
Time is money. Make the most out of both with Monzo. Britain's favourite bank.
- Secondary
- 5.7k employees
- Founded 2015
2
LemFi· London, England, United Kingdom
We’re building the go-to financial app for the Global South - enabling our customers to spend, save, send, and grow their wealth, all in one place. Moving countries shouldn’t mean losing access to fair and affordable financial services, yet millions still face barriers to sending money, saving securely, or accessing credit when it matters most. That’s why our app brings together international transfers, multi-currency accounts, savings, and financial tools designed for life wherever you call home.With over 2 million customers globally, we empower people to support their families, build financial stability, and stay connected from anywhere in the world.For support enquiries, please contact support@lemfi.com
- Corporate
- 462 employees
- Founded 2020
3
Verto· London, England, United Kingdom
Verto is a global B2B payments solution that helps businesses send money to anyone, anywhere. Using a purposefully built tech infrastructure and payment rails, you can instantly send and receive money in over 200 countries. Today, Verto helps 1000+ customers from startups, SMEs to large corporate companies convert millions of dollars per year.Using our liquidity and price discovery marketplace solution, new customers can convert between 49 currencies, open bank account or wallets in seconds and make payments on a single platform.
- Grant
- 259 employees
- Founded 2017
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4
Aspora· London, England, United Kingdom
At Aspora, we're building financial bridges that connect the global diaspora - starting with India, the Philippines and beyond - to home.Trusted by 1 Million+ users worldwide for seamless money transfers home at Google rates.No hidden fees, no surprises - just transparent financial services designed for global citizens living away from home.
- Series B
- 227 employees
- Founded 2022
5
Runa· London, England, United Kingdom
Runa is pioneering a first-of-its-kind payment rail capable of sending and accepting digital value at scale. With Runa, companies can pay the people they serve in any form of digital value, anywhere, instantly. Legacy payment mechanisms struggle to adapt to low-volume, high-velocity transactions both locally and globally, such as sending payouts to gig workers, creators, or sending rewards to customers or employees wherever they are. Runa’s infrastructure and network facilitates payouts to these recipients, helping businesses expand their reach, retain their users while modernizing the way in which they manage and transfer money: instantly, internationally, and free of charge for the senders and the recipient.Operating in more than 30 countries and 18 currencies, hundreds of leading companies rely on Runa to power instant, flexible global payouts including Sodexo, TopCashback, Perkbox, Vodafone, Coinbase and Globetopper. We are committed to providing a hiring and working experience in which all people feel they are equally respected and valued regardless of race, religion, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
- Series B
- 126 employees
- Founded 2016

6
Capi Money· London, England, United Kingdom
Capi Money's mission is to grow GDP in emerging markets by making the global financial system fairer and more accessible. We’re tackling global trade, making it easier for importers to pay their international suppliers. Our platform enables businesses to expand rapidly, create jobs, and be engines of prosperity for their countries.We're backed by Creandum, Firstminute Capital, Y Combinator, Raba, Kima Ventures, Africa Fintech Collective, Musha Ventures, Four Cities, former a16z and YC partners (including Paul Graham), scouts from a16z and Sequoia, and co-founders and operators from Onfido, Taptap Send, McKinsey, Earnest, GiveDirectly, and Turquoise Mountain.
- Series A
- 99 employees
- Founded 2023
7
Saturn· London, England, United Kingdom
Saturn is the leading AI and Data transformation partner to Global Wealth and Advice firms. We help transform operations, compliance and data to make the firm scale and deliver a better client experience.
- Series A
- 72 employees
- Founded 2023
8
nsave· London, England, United Kingdom
nsave provides trusted accounts to people from countries where inflation is high and banking is broken. Experienced in banking, regulatory compliance, and fintech, the nsave team has worked for Morgan Stanley, Revolut, BNY Melon, Checkout.com, Robinhood, and Microsoft.
- Series A
- 65 employees
- Founded 2022
9
Bits· London, England, United Kingdom
Bits is a Y Combinator backed startup based in London, UK, that offers a host of consumer financial products, such as the Bits Credit Card, Store Card and more.
- Seed
- 51 employees
- Founded 2018
10
Female Invest· London, England, United Kingdom
Female Invest is on a mission to close the financial gender gap. By creating a safe space and a trusted source for knowledge, we’re democratizing investing for everyone globally. Our edtech platform has paying members in 100+ countries and our book 'Girls Just Wanna Have Funds' is a global bestseller.
- Series A
- 45 employees
- Founded 2019

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Y Combinator-backed Fintech companies in London

The list above ranks Y Combinator-backed Fintech companies headquartered in London by current headcount, drawn from public LinkedIn and Crunchbase records. With 14 matching companies in Refolk’s index, you can see exactly where Y Combinator’s Fintech thesis has landed in London.

Three filters - investor, industry, city - narrow the field to a tight cluster of operators with overlapping incentives. They share a thesis, a network, and a market. Hiring from this list usually means hiring someone already inside the Y Combinator Fintech world in London.

Refolk converts this list into a live search. Ask for “Y Combinator Fintech companies in London hiring senior engineers” or “founders of Y Combinator-backed Fintech companies in London who left in the last year” and Refolk returns a ranked shortlist.

How this list is built

Refolk pulled Fintech companies headquartered in London whose disclosed Crunchbase investor list includes Y Combinator, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes monthly.

Last refreshed: Tue, 15 Sep 2026 13:37:59 GMT

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