Insights

Cross-border Growth As part of the Sumer Group since December 2023, Simmons Gainsford benefits from a wider UK mid-market platform (2,500+ people, 50+ offices). This presents sales opportunities to cross-sell international expansion, inbound investment, and UK market entry advisory to SMEs seeking scale.

Private Client Focus The firm has a strong private client tax capability, multilingual partners, and a Gibraltar office, enabling services to foreign nationals relocating to the UK and UK nationals considering residence in Gibraltar. Target owner-managed businesses and high-net-worth clients with cross-border tax and residency needs.

Leadership Expansion Recent promotions to Partner and new appointments in corporate tax signal continued leadership investment, creating opportunities for higher-value advisory services, integration projects, and client retention through expanded service lines.

Strategic Alliances Recent partnerships and mergers, including Fortis Accountants joining and ongoing expansion within the Sumer ecosystem, open avenues for cross-referrals and bundled services across audit, tax, advisory, and procurement.

Diversified Solutions Beyond traditional accounting, Simmons Gainsford offers Capital Allowances, Credit Management, Financial Services, Insurance, and Procurement expertise, enabling upsell opportunities as clients grow, internationalize, or optimize operations.

Simmons Gainsford Group Tech Stack

Simmons Gainsford Group uses 8 technology products and services including W3 Total Cache, jQuery Migrate, Microsoft Office, and more. Explore Simmons Gainsford Group's tech stack below.

  • W3 Total Cache
    Caching
  • jQuery Migrate
    Javascript Libraries
  • Microsoft Office
    Office Suites
  • WordPress Block Editor
    Page Builders
  • KnowBe4
    Security
  • HSTS
    Security
  • Google Tag Manager
    Tag Management
  • Tailwind CSS
    UI Frameworks

Media & News

Simmons Gainsford Group's Email Address Formats

Simmons Gainsford Group uses at least 1 format(s):
Simmons Gainsford Group Email FormatsExamplePercentage
First.Last@sgllp.co.ukJohn.Doe@sgllp.co.uk
97%
First.Middle@sgllp.co.ukJohn.Michael@sgllp.co.uk
2%
First.L@sgllp.co.ukJohn.D@sgllp.co.uk
1%

Frequently Asked Questions

Where is Simmons Gainsford Group's headquarters located?

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Simmons Gainsford Group's main headquarters is located at 33 Cavendish Square 14th Floor London, England w1g 0pw United Kingdom. The company has employees across 2 continents, including EuropeNorth America.

What is Simmons Gainsford Group's phone number?

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You can contact Simmons Gainsford Group's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Simmons Gainsford Group's official website and social media links?

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Simmons Gainsford Group's official website is sgllp.co.uk and has social profiles on LinkedIn.

What is Simmons Gainsford Group's SIC code NAICS code?

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Simmons Gainsford Group's SIC code is 8721 - Accounting, Auditing, and Bookkeeping Services NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does Simmons Gainsford Group have currently?

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As of June 2026, Simmons Gainsford Group has approximately 156 employees across 2 continents, including EuropeNorth America. Key team members include Ceo: N. S.Partner: A. H.Partner/Member: J. D.. Explore Simmons Gainsford Group's employee directory with LeadIQ.

What industry does Simmons Gainsford Group belong to?

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Simmons Gainsford Group operates in the Accounting industry.

What technology does Simmons Gainsford Group use?

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Simmons Gainsford Group's tech stack includes W3 Total CachejQuery MigrateMicrosoft OfficeWordPress Block EditorKnowBe4HSTSGoogle Tag ManagerTailwind CSS.

What is Simmons Gainsford Group's email format?

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Simmons Gainsford Group's email format typically follows the pattern of First.Last@sgllp.co.uk. Find more Simmons Gainsford Group email formats with LeadIQ.

When was Simmons Gainsford Group founded?

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Simmons Gainsford Group was founded in 1948.

Simmons Gainsford Group

AccountingEngland, United Kingdom51-200 Employees

Simmons Gainsford is a midsize UK firm that combines chartered accounting with business advisory services, including audit and tax. Founded in 1948, its main office is in Central London, with additional offices in North London, Sussex, and Gibraltar. The firm serves privately owned companies, ranging from startups to businesses with substantial turnover, and supports their growth both nationally and internationally. It emphasizes helping clients access inward investment into the UK, particularly from Asian and Eastern European markets, aided by multilingual partners and staff.
In December 2023, Simmons Gainsford joined the Sumer Group, a mid-market accountancy practice operating across the UK and Ireland with more than 50 offices and over 2,500 staff. This affiliation places the firm within a broader network that provides specialized services beyond core accounting, including Capital Allowances, Credit Management, Financial Services, Insurance, and Procurement.

Section iconCompany Overview

Headquarters
33 Cavendish Square 14th Floor London, England w1g 0pw United Kingdom
Phone number
SIC Code
8721 - Accounting, Auditing, and Bookkeeping Services
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1948
Employees
51-200

Section iconFunding & Financials

  • $10M$25M

    Simmons Gainsford Group's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $10M$25M

    Simmons Gainsford Group's revenue is estimated to be in the range of $10M$25M

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