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Business as usual

The team you trust, now with even more to offer

Welcoming Defries Weiss to the Simmons Gainsford group.

What’s happening?

We’re Joining Forces

We are pleased to share that Defries Weiss has joined forces with Simmons Gainsford, a move that brings together two firms with a shared commitment to client service, specialist expertise, and long-standing relationships.

While the name may be changing, the people and service you know remain the same - now with the added benefit of access to a broader network of knowledge and resources.

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  • Familiar Faces Your usual contacts at Defries Weiss are still here and continuing to support you.
  • Expanded Services You’ll now also have access to Simmons Gainsford’s full range of services including tax, audit, advisory, outsourced finance, payroll, financial services, and more.
  • Seamless solutions This integration enables us to support your needs even more effectively, across every stage of your business or personal financial journey.
About Simmons Gainsford

The Obvious Choice for Quality Advice and Service

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First established in 1948, Simmons Gainsford is a multidisciplinary firm of chartered accountants and business advisers. Our main office is in Central London, with additional offices in Sussex and Gibraltar. Our size, structure, and resources enable us to provide the full range of services and technical expertise, but with the personal touch that comes from a high level of partner engagement.

In December 2023, Simmons Gainsford joined the Sumer Group, the UK and Ireland’s leading mid-market accountancy practice delivering professional support to small and medium-sized enterprises (SMEs) across England, Scotland, and Northern Ireland. It is a top 15 UK accountancy practice on a mission to champion SME businesses and offer local delivery supported by national expertise.

What the team says

Our Combined Strength

Darren Hersey

“We are delighted to welcome Defries Weiss to the Simmons Gainsford family. Gerry, Warren, and their team bring a wealth of experience and a strong commitment to client service, which aligns perfectly with our own values.”

Darren Hersey

“Joining Simmons Gainsford marks an exciting new chapter for Defries Weiss. We have always been committed to delivering high-quality personal service to our clients, and this partnership allows us to enhance that offering with the additional resources and expertise of Simmons Gainsford. We look forward to this new journey together.”

We’re Coming, Too!

Your usual contacts will continue to support you

Warren Weiss - Client Director
Warren Weiss Client Director
Chantelle Marshall - Associate Director
Chantelle Marshall Associate Director
Kaajal Shah - Client Manager
Kaajal Shah Client Manager
Khalil Bruney - Audit Junior
Khalil Bruney Audit Junior

Our Services

You’ll now also have access to Simmons Gainsford’s full range of services including:

Tax

We deliver expert guidance across all aspects of tax planning, compliance, and advisory. From preparing accurate tax returns to offering strategic advice on corporation tax, VAT, and personal tax, our specialists stay ahead of evolving legislation to maximise reliefs and manage liabilities effectively.

Audit

Comprehensive audit services tailored to meet the unique needs of businesses across various sectors. With a proactive and client-focused approach, we help clients build trust with stakeholders and drive informed decision-making.

Advisory

Our advisory services are designed to support businesses at every stage of growth and transformation. Whether you're pursuing an acquisition, refining operations, or preparing for exit, we will help foster long-term success.

Outsourced Finance

We offer a fully outsourced finance function designed to scale with your business. Whether you’re just starting out or entering a new phase of growth, our flexible support model evolves with you - adding the right resources at the right time.

Payroll

A trusted partner for businesses seeking expert-managed payroll services. We provide tailored support, clear advice, and proactive guidance to help you handle even the most complex payroll scenarios with confidence.

Financial Services

We set up SG Financial Services as we had seen our clients receive poor advice or take advice too late. Our dedicated team of expert advisers can manage your affairs and provide you with the full range of financial advice and investment management services.

Capital Allowances

Our in-house Capital Allowances team is led by a Chartered Quantity Surveyor with over 25 years of specialist experience. We provide practical and proactive advice, ensuring early involvement to maximise value for our clients.

Testimonials

They Said It Best

FAQs

Why is Simmons Gainsford, part of the Sumer Group acquiring Defries Weiss?

This partnership brings together two thriving businesses with complementary strengths and a shared purpose and values. Defries Weiss’s excellent reputation and strong presence in North London enhances the Sumer Group's ability to serve clients across the UK with local expertise backed by national resources.

Will there be any changes to client service teams?

Clients will continue working with the same trusted professionals they know. The Defries Weiss team will remain in place, now with access to additional resources, specialised expertise, and technology to enhance client service.

Will Defries Weiss be changing its name?

Sumer adopts a regional brand approach and following the deal we have become part of the enlarged regional practice within London. This will mean after a short transition period we will adopt the Simmons Gainsford name.

How does this affect Defries Weiss’s operations?

Day-to-day operations will continue smoothly. The local leadership team remains in place, and the firm will operate from Simmons Gainsford’s headquarters at: 14 th Floor, 33 Cavendish Square, London, W1G 0PW. Over time, clients will benefit from enhanced capabilities and access to specialised services through Sumer Group's national network.

Does this partnership signal further expansion for Simmons Gainsford, part of the Group in London?

Simmons Gainsford is committed to strategic growth in the region. We continue to seek opportunities to enhance our ability to serve SME businesses throughout the country.

How does this merger fit into the Sumer Group's overall strategy?

This partnership aligns perfectly with the Sumer Group's strategy of investing in exceptional firms that share our commitment to championing SME businesses. With backing from Penta Capital and BlackRock, the Sumer Group aims to grow rapidly over the coming years through strategic partnerships with leading regional firms like Defries Weiss.

Contact Us

London Office
Tel: 020 7447 9000
Email:mail@sgllp.co.uk
Uckfield Office
Tel: 01825 746 888
Email:mail@sgllp.co.uk
Gibraltar Office
Tel: +350 2005 9753
Email:mail@sgllp.gi
North-West London Office
Tel: 020 8969 9411
Email:_riordan@sgllp.co.uk

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