Who Is Flagstone Group Ltd?
Flagstone Group Ltd is the UK’s leading cash deposit platform, revolutionising the way individuals, businesses, and financial professionals manage savings. Established in May 2013 and headquartered in London’s Piccadilly, Flagstone operates under the registered company number 08528880.
The firm specialises in providing access to high-interest savings accounts through a single digital application, empowering users to diversify deposits across 65+ UK banks and building societies, all while maximising interest returns and FSCS protection.
Initially incorporated as Flagstone Investment Management Ltd, the company rebranded in July 2022 to reflect its broader mission in reshaping UK cash management. Its platform enables users to open, manage, and monitor multiple savings accounts through one secure interface, removing traditional banking complexity and inefficiency.
With over £17 billion in assets under administration, £149 million in capital raised, and a dedicated workforce of 350+ employees, Flagstone is a cornerstone of the UK fintech ecosystem. Its services are particularly attractive to time-poor savers, legal and corporate entities, and wealth managers seeking smarter cash strategies.
Who Leads Flagstone Group Ltd and What Is the Company’s Structure?
Flagstone operates under a diverse leadership board combining fintech innovation, client services expertise, and financial governance. The company is structured as a Private Limited Company and led by a team of British and international professionals with extensive industry backgrounds.
Directors and Senior Officers
| Name | Role | Appointed | Nationality | Country of Residence |
| Simon Paul Merchant | Co-Founder & Chairman | 18 Sep 2014 | British | England |
| Andrew John Thatcher | Co-Founder & Non-Exec Director | 14 May 2013 | British | United Kingdom |
| Arman Tahmassebi | Chief Executive Officer | – | – | – |
| Meredith Jacqueline Alice Williams | Director | 01 Apr 2022 | British | England |
| Keegan Crosby Mitchell | Director | 23 Oct 2024 | American | United States |
| Takashi Bayard Moriuchi | Director | 23 Oct 2024 | American | United States |
| Francesco Fulcoli | Chief Compliance & Risk Officer | – | – | – |
| Lakhbir Sandhu | Chief Financial Officer (Interim) | – | – | – |
| Lee Provoost | Chief Technology Officer | – | – | – |
The company has built a comprehensive C-suite and governance team to ensure compliance, innovation, client protection, and operational transparency across all services.
What Is the Capital Strength and Financial Position of Flagstone Group Ltd?
Flagstone demonstrates a strong financial foundation backed by significant institutional support and client confidence.
As of its most recent filings, the company maintains active status, submits annual accounts regularly, and adheres to stringent compliance under SIC code 64999 – Financial intermediation not elsewhere classified.
Financial Overview:
| Attribute | Detail |
| Company Status | Active |
| Incorporation Date | 14 May 2013 |
| Company Type | Private Limited Company |
| SIC Code | 64999 – Financial Intermediation |
| Capital Raised | £149 million |
| Assets Under Admin | £17+ billion |
| Head Office | Clareville House, Oxendon Street, London |
| Staff Size | 350+ |
This strong financial backing allows Flagstone to scale rapidly, invest in technology, and continually enhance user experience while maintaining robust regulatory compliance.
What Services and Features Does Flagstone Group Ltd Offer?
Flagstone Group Ltd is not a bank, comparison site, or wealth adviser, it’s something far more streamlined. As the UK’s most comprehensive cash deposit platform, Flagstone connects savers with hundreds of high-interest accounts from 65+ UK banks, all accessible through a single application.
Core Services
- Cash Deposit Platform: A digital portal enabling users to access, open, and manage savings accounts from a central dashboard.
- Interest Maximisation: Access exclusive and market-leading interest rates unavailable directly from banks.
- Diversification & FSCS Protection: Spread deposits across multiple banks to maximise the £120,000 per bank FSCS protection, safeguarding your capital.
- Unified Account Management: Track interest, balances, and account performance all in one place, removing administrative burden.
Account Types Available
- Instant Access Savings Accounts
- Notice Savings Accounts (e.g. 120-day notice)
- Fixed-Term Deposit Accounts (e.g. 12-month fixed)
Who Flagstone Serves?
| Segment | Benefit |
| Individuals | Earn higher interest with less hassle |
| Businesses | Manage corporate cash and increase FSCS coverage |
| Law Firms | Handle client reserves securely and compliantly |
| Wealth Managers | Offer clients seamless, interest-optimised cash solutions |
Flagstone also caters to savers with a minimum £10,000 deposit, enabling them to start with instant access to hundreds of account options, without repeated paperwork or multiple logins.
What Are Clients and the Public Saying About Flagstone Group Ltd?
Flagstone enjoys a strong reputation among UK users for its intuitive platform and meaningful returns on cash deposits. Client feedback highlights user satisfaction across accessibility, security, and customer service.
Positive Feedback:
- Ease of Use: Simple interface suitable for first-time and experienced investors.
- Customer Support: Professional and responsive service teams.
- Access to Rates: Centralised view of the most competitive rates in the market.
- Security: FSCS protection on eligible deposits and transparency around interest.
Areas for Improvement:
- Transfer Times: Moving funds between accounts may take 1-2 days, possibly impacting interest gains.
- Web-Only Access: Currently, Flagstone is a web app only—no dedicated mobile application as of 2026.
- Taxation: ISAs are not yet available (Flagstone Cash ISA expected in early 2026); users are responsible for their tax on interest.
- Advisor Commissions: Some users noted that advisers receive commissions, which may not be immediately visible.
Despite these considerations, the platform remains one of the most highly-rated in its category, particularly for users with larger deposit amounts seeking to avoid time-consuming banking processes.
How Can You Contact Flagstone Group Ltd?
Flagstone provides a range of contact methods for clients and prospective users. Whether you are ready to open an account or need support, the team is accessible via phone and email during working hours.
Contact Details
| Type | Information |
| Address | 1st Floor, Clareville House, 26–27 Oxendon Street, London, SW1Y 4EL |
| Telephone | +44 (0)203 745 8130 |
| info@flagstoneim.com | |
| Website | www.flagstoneim.com |
| Support Hours | Monday – Friday, 9:00am to 5:30pm (UK time) |
Support is provided by a dedicated UK-based team who are trained to assist with onboarding, technical issues, and account queries.
Why Choose Flagstone Group Ltd?
Flagstone Group Ltd offers a smarter way to manage and grow your savings. Unlike traditional banks, Flagstone provides access to hundreds of high-interest savings accounts from over 65 trusted UK banks, all through a single, secure platform.
Whether you’re an individual saver, business, or legal professional, the platform allows you to maximise returns, diversify deposits, and enjoy full FSCS protection.
With no paperwork, exclusive rates, and real-time account control, Flagstone takes the hassle out of saving. Its dedication to transparency, efficiency, and user empowerment has positioned it as a leader in the UK’s fintech space, trusted by over 350 staff and thousands of clients nationwide.
