Fisher, Sassoon & Marks (“FSM”) is a London-based firm of chartered accountants with over 65 years’ experience delivering high-quality services to clients across a range of sectors. We pride ourselves on providing a personal, partner-led approach: your affairs are handled by senior staff who deeply care about your success.

We offer a comprehensive suite of services, including:

Audit & Advisory Services — independent assurance, internal controls, due diligence, risk reviews

Tax Compliance & Planning — corporate & personal tax, international tax, R&D schemes, transfer pricing

Regulatory Services — compliance with regulatory frameworks, statutory requirements, pension audits

Business Advisory — startup support, growth strategies, restructuring, succession planning

Management Information & Accounting — bookkeeping, management reporting, forecasting, KPI dashboards

We believe there is no “one size fits all” solution. We tailor everything to the stage, scale and ambitions of each client, working closely with you to set clear objectives and deliver long-term value.

Why choose FSM?

Partner and senior staff involvement — we don’t delegate your core work down to juniors

Commitment to independence, integrity and trust

Deep regulatory and technical expertise built over decades

Flexible, proactive advice — we anticipate challenges before they arise

Strong relationships grounded in loyalty and long-term client success

Who we serve

We work with a diverse range of clients, including owner-managed businesses, small and medium enterprises, family firms, and professional practices in regulated sectors. Our experience spans multiple industries, enabling us to adapt to sector-specific challenges.

Let’s Talk

If you’re looking for an accounting and advisory partner who will treat your business as their own, contact us today.

Fisher Sassoon & Marks

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Fisher Sassoon & Marks

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Teams

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