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Advisers who understand your ambition.

From audit to advisory, tax to transactions, Simmons Gainsford helps businesses and individuals thrive with clear insight, practical guidance, and a genuinely personal approach, combining national strength with local delivery.

We work with ambition, not just sectors.

While our expertise spans a wide range of industries, we’ve developed deep capability in key sectors where our insight makes the greatest impact.

Our experience gives us a real understanding of the opportunities, challenges, and regulatory landscapes our clients navigate, allowing us to deliver advice that’s pragmatic, commercially focused, and always value-driven.

Local roots, global reach.

At Simmons Gainsford, we combine local insight with international expertise. Our community-focused teams are accessible, responsive, and deeply embedded in the regions we serve. Our reach extends across borders. With extensive experience advising UK and international businesses, entrepreneurs, and private clients, we understand the complexities of operating in multiple markets and deliver practical, compliant, and commercially sound solutions wherever you do business.

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National strength, local delivery.

As part of Sumer Group, one of the Top 15 accountancy and advisory practices in the UK, we bring national scale to every client relationship. This means access to a broad network of specialists, resources, and sector intelligence, all delivered through the close, personal service you expect from a trusted local firm.

  • Trusted by 2,000+ businesses across the UK and beyond
  • Part of a Top 15 UK accountancy practice through Sumer Group
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Breadth and depth of expertise.

Our team brings together specialists across audit, tax, advisory, International, and corporate finance, with dedicated expertise in key sectors such as property, professional services, media, technology, and international trade. This breadth enables us to provide joined-up advice that considers every angle, helping our clients navigate challenges, seize opportunities, and achieve sustainable growth.

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Trusted by businesses nationwide.

Entrepreneur

“I chose to appoint Simmons Gainsford as my UK advisor as a result of personal recommendations and following my own research into the firm. As an entrepreneur with international business affairs, the key attributes that I seek in a tax advisor are responsiveness, clarity, foresight, knowledge and self-awareness. The personality of the consultant is also an important factor. My experience of working with Effie Karamani was excellent as she understood my objectives perfectly and worked alongside me to achieve my goals. She is extremely personable and knowledgeable, provides timely and clear advice and interacted seamlessly with my other advisors and intermediaries in different jurisdictions.”

Jamie Godsave
Managing Director at Endersham Cleaning Services

"Although we have only been working with SG for a little over a year, it feels a lot longer. This is a positive reflection of the time and effort they have put in to the relationship, to ensure a smooth transition and to understand our business and the motivation and goals of the owners of the business. We now have the right financial systems and structure in place to support our continued growth and receive regular management information that allows us to make important business decisions. I’m confident that we’ve made the right choice with Simmons Gainsford and look forward to working with them as a long-term business partner.”

Colin Banyard
Founding Shareholder of Cracknore Investment Limited

With my focus mainly on projects, Simmons Gainsford are extremely helpful in making sure that our deals are structured properly, ensuring no potential issues downstream. Gary’s tax knowledge is fantastic and David’s understanding of what actually happens on the ground is brilliant. They really do complement each other very well and provide a first-rate service. They always make themselves available and will happily jump into meetings, often at very short notice. I really do value their support.”

Meloney Wiltshire-Payne
CEO/Finance Director at Corporate Media Partners Limited

“Our business has changed significantly over the years having faced numerous challenges, during these times Simmons Gainsford have always been very supportive. Their team relates well to us, and they take the time to understand the business and its journey. The audit team on the ground is also very good and communicative, they always take the time to listen, explain and understand. And having continuity with the team, which is an important factor for me, helps to ensure that we have a very good two-way working relationship. All in all, we really do feel as though we’re in safe hands.”

Stuart McLuckie
Managing Director at Zedra Trust Company (UK) Limited

"We asked Simmons Gainsford to provide audit services to a large client who was paying high fees and missing deadlines with their existing auditor. Despite taking over a complex client at short notice, they were able to assist us with completing the audit within a tight timeframe. The team were incredibly helpful and approachable in organising the process, allowing for easy sharing of information, and keeping matters on track.”

Paul Sultan
CFO and COO at Mondottica

“When I joined Mondottica three years ago, I knew straight away that our Big 4 auditor was not the right match for our business. The need for a change was apparent and it certainly reinforced the importance of working with the right audit firm. Despite knowing that a change of auditor would be very challenging, we appointed Simmons Gainsford. The handover was handled smoothly by their team and we feel that they have done a terrific job over the last two years. They get things done, put the client at the centre of their service and I have no doubt that we made the right choice. We will now reap the benefits of having made the change and I look forward to building on what is already a very strong professional working relationship with the Simmons Gainsford team.”

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