What is Simmons Gainsford, part of the Sumer Group's NAICS code?

Simmons Gainsford, part of the Sumer Group's NAICS code is 5412 (Accounting, Tax Preparation, Bookkeeping, and Payroll Services).

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, part of the Sumer Group Tech Stack

Simmons Gainsford, part of the Sumer Group uses 8 technology products and services including Moat, oEmbed, Moment.js, and more. Explore Simmons Gainsford, part of the Sumer Group's tech stack below.

Moat

Analytics

oEmbed

Dev Tools

Moment.js

Javascript Libraries

jQuery Migrate

Javascript Libraries

DocuSign

Miscellaneous

reCAPTCHA

Security

Google Tag Manager

Tag Management

SiteOrigin Widgets Bundle

Web Platform Extensions

Simmons Gainsford, part of the Sumer Group Email Formats	Example	Percentage
First.Last@sgllp.co.uk	John.Doe@sgllp.co.uk	97%
First.Middle@sgllp.co.uk	John.Michael@sgllp.co.uk	2%
First.L@sgllp.co.uk	John.D@sgllp.co.uk	1%

Simmons Gainsford, part of the Sumer Group Email Formats

Example

Percentage

First.Last@sgllp.co.uk

John.Doe@sgllp.co.uk

97%

First.Middle@sgllp.co.uk

John.Michael@sgllp.co.uk

First.L@sgllp.co.uk

John.D@sgllp.co.uk

Frequently Asked Questions

What is Simmons Gainsford, part of the Sumer Group's phone number?

You can contact Simmons Gainsford, part of the Sumer Group's main corporate office by phone at

+44-20-7447-****

. 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, part of the Sumer Group's official website and social media links?

Simmons Gainsford, part of the Sumer Group's official website is sgllp.co.uk and has social profiles on LinkedIn.

What is Simmons Gainsford, part of the Sumer Group's SIC code NAICS code?

Simmons Gainsford, part of the Sumer 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, part of the Sumer Group have currently?

As of July 2026, Simmons Gainsford, part of the Sumer Group has approximately 158 employees across 2 continents, including EuropeNorth America. Key team members include Partner: A. H.Partner/Member: J. D.Associate Partner: L. D.. Explore Simmons Gainsford, part of the Sumer Group's employee directory with LeadIQ.

What industry does Simmons Gainsford, part of the Sumer Group belong to?

Simmons Gainsford, part of the Sumer Group operates in the Accounting industry.

What technology does Simmons Gainsford, part of the Sumer Group use?

Simmons Gainsford, part of the Sumer Group's tech stack includes MoatoEmbedMoment.jsjQuery MigrateDocuSignreCAPTCHAGoogle Tag ManagerSiteOrigin Widgets Bundle.

What is Simmons Gainsford, part of the Sumer Group's email format?

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

When was Simmons Gainsford, part of the Sumer Group founded?

Simmons Gainsford, part of the Sumer Group was founded in 1948.

Simmons Gainsford, part of the Sumer 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.

Insights

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