Flagstoneim
London, GB · Founded 2013 · 393 employees on LinkedIn · 8 known investors
Flagstone is a UK savings platform that connects individual savers with over 65 banks and 5,000+ financial advisers to help them maximize returns on their deposits. The platform serves savers aged 18+ with UK bank accounts and £10,000 minimum deposits seeking better interest rates on their savings.
Also known as Flagstone · Flagstone Group Ltd
Investors · 8
Also in the syndicate · 4
Company profile
researched Aug 2026Flagstone Group Ltd is a London-based financial technology company that runs a cash deposit platform. Through a single application and login, clients can open and manage savings accounts across more than 65 UK banks and building societies, including instant access, notice and fixed-term products, as well as a cash ISA that allows multiple tax-free accounts with different banks within one wrapper. Cash is held in an FSCS-eligible holding account before being deposited into chosen savings accounts, and the platform is used to spread deposits to maximise FSCS protection (up to £120,000 per client per UK banking group, £240,000 for joint accounts, with qualifying temporary high balances covered up to £1 million for six months).
The company serves individual and joint savers, businesses, charities, SIPPs, SSASs and trusts, and financial advisers, and operates a separate international proposition. Product coverage extends across GBP, USD and EUR deposits for business clients. Flagstone states that it is not a bank, a comparison site or a wealth adviser: banks list accounts, including exclusive rates, on the platform, and Flagstone does not provide financial advice.
Compiled by commissioned research from 5 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Competitors · 4
by search overlap
Companies competing with Flagstoneim for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline · 10
launches, deals, and filingsBank ABC launched an exclusive six-month fixed-term business savings account on the Flagstone platform at 4.09% AER, continuing its partnership providing deposit products in GBP, USD and EUR.
Economics consultancy Cebr partnered with Flagstone on independent economic analysis.
Flagstone launched a cash ISA, positioned as a rival to Hargreaves Lansdown's offering.
Flagstone appointed Arman Tahmassebi as chief executive as co-founder Simon Merchant stepped down from the role for health reasons.
Chetwood Bank, in collaboration with Flagstone, offered limited-time fixed-term savings rates across short- and medium-term durations.
Intelliflo partnered with Flagstone so advisers can add valuations more seamlessly and improve efficiency in client reporting.
Estancia Capital Partners, a US financial services private equity firm, took a minority stake in Flagstone via a £108 million equity investment to support expansion of its savings product line.
$138M source ↗
Round led by OMERS Ventures with participation from existing investors Kindred Capital and Moneysupermarket Group plc, to expand the cash deposit marketplace in the UK.
$15M source ↗
Revolut launched a savings vaults feature for UK users in partnership with Flagstone.
Flagstone raised £11m in growth funding from backers including Kindred Capital, VentureFounders, Moneysupermarket Group and individual investors.
$14.1M source ↗
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 5
primary sources listed
- Flagstoneimflagstoneim.com · web
5 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Flagstoneim do?
- Flagstone operates a UK cash deposit platform giving savers access to accounts at 65+ banks through a single application.
- Who are Flagstoneim's investors?
- Flagstoneim's investors include Kindred Capital, OMERS Ventures, Venture Founders, Volution Ventures.
- Where is Flagstoneim headquartered?
- Flagstoneim is headquartered in London, GB.