FINANCIAL SERVICES COMPLIANCE CONSULTANTS
Board-level expertise with practical, hands-on delivery
As specialist financial services compliance consultants, we support banks, investment firms, and other regulated businesses with practical, proportionate advice. Our team brings decades of senior regulatory experience, including former heads of compliance at major institutions and former regulators, delivering solutions that work for your firm.
Whether you need guidance on a specific regulatory challenge, support with an FCA application, or an experienced team to manage a remediation project, we tailor our approach to your requirements. We work with firms of all sizes, from international banking groups to newly authorised businesses, providing the depth of expertise you would expect from a large consultancy, with the responsiveness and personal service of a specialist firm.
our compliance consultancy services
Supporting 80+ regulated firms with advisory, projects, and board‑level training across wholesale and retail financial services.
financial services SECTORS WE SUPPORT
Our compliance consultants provide deep sector‑specific support across regulated financial services. Select your sector for more information.
Can’t see your sector? We also work with mortgage and insurance brokers, independent financial advisers, consumer credit providers, fintech firms, discretionary fund managers, and other regulated businesses seeking specialist compliance support. Contact us to discuss your needs.
About our financial services compliance consultants
Leaman Crellin is an independent team of financial services compliance consultants, established in 2018, supporting firms of all sizes across regulated markets.
Our team of independent compliance consultants bring deep industry expertise, with backgrounds including heads of compliance at major banks, former regulators, and specialists across FCA, PRA, and international regulatory frameworks. As a result we deliver practical compliance solutions that help clients meet regulatory expectations with confidence.
Whether you needs ongoing advisory support or help with a specific project our flexible approach prioritises your needs. Providing tailored advice, resources, and training to help your firm thrive in a constantly changing regulatory environment.
How we have Helped our clients
Discover how our compliance consultants have helped financial services firms solve regulatory challenges, improve compliance processes, and deliver results. Hear about the practical impact we’ve made for their business.
Embedding SMCR know‑how and confidence
We had an SMCR framework on paper but limited understanding of how it worked day to day. Leaman Crellin translated it into clear policies and training our senior managers could actually use
CEO, Wholesale Bank
Reviewing permissions and reducing fees
We expected a routine review. Instead, they mapped which activities were regulated and identified changes that materially reduced our FCA fees and levies while keeping us fully compliant.
CEO, Corporate Finance Broker
Strengthening defences against market abuse
We needed to tighten our market abuse controls fast. Leaman Crellin delivered a tailored surveillance lexicon we could implement straight away and coached us on refining it over time.
Head of Compliance, Trading Firm
Individual, expert advice on SMF approval
After a previous setback with a regulator, I was cautious about reapplying. Leaman Crellin helped me frame my experience and rehearse for the role. My approval came through the same week.
CRO, Retail Bank
Avoiding a serious regulatory breach
Leaman Crellin slotted in as an extension of our team. Their health check surfaced gaps we'd missed, and the Principle 11 notifications were handled calmly. Giving the board confidence the FCA had the full picture.
Head of Compliance, Investment Platform
LATEST INSIGHTS
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Let’s discuss how our financial services compliance consultants can support your business.

