Insights

Strategic Growth Simmons Gainsford recently joined the Sumer Group, signaling a broader regional growth strategy and access to a larger mid-market network. This provides opportunities to offer scalable services to integrated clients across the UK and Ireland, including cross-sell of advisory, tax, and international expansion support.

International Focus The firm emphasizes inward investment to the UK and has multilingual partners with ties to Asian and Eastern European markets, plus a Gibraltar footprint. This creates sales potential for cross-border structuring, tax planning, and compliance services for inbound investors and UK-based foreign nationals.

Leadership Expansion Recent partner promotions and new hires in tax and corporate services indicate an active investment in leadership and service lines. This suggests readiness for premium advisory engagements, higher-value audits, and targeted private client and corporate tax opportunities.

Digital and Compliance The tech stack includes Xero, WordPress, Mailchimp, Brevo, KnowBe4 and analytics tooling, signaling a modern, compliant, and scalable platform. Opportunities exist to upsell cloud accounting, cybersecurity training, data analytics, and digital onboarding for SMEs seeking efficiency and regulatory readiness.

SME Networking With a client base of privately owned businesses ranging from startups to those over £100m turnover and multiple UK offices, there is substantial cross-sell potential for advisory, corporate tax, inheritance and wealth planning, and international growth services to existing and referral networks.

Similar companies to Simmons Gainsford, part of the Sumer Group

Simmons Gainsford, part of the Sumer Group Tech Stack

Simmons Gainsford, part of the Sumer Group uses 8 technology products and services including Xero, WordPress, CookieYes, and more. Explore Simmons Gainsford, part of the Sumer Group's tech stack below.

Media & News

Simmons Gainsford, part of the Sumer Group's Email Address Formats

Simmons Gainsford, part of the Sumer Group uses at least 3 email formats:
Simmons Gainsford, part of the Sumer 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

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

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You can contact Simmons Gainsford, part of the Sumer 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, part of the Sumer Group's official website and social media links?

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

How much revenue does Simmons Gainsford, part of the Sumer Group generate?

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As of August 2026, Simmons Gainsford, part of the Sumer Group's annual revenue is estimated to be $10M - $25M.

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

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

How many employees does Simmons Gainsford, part of the Sumer Group have currently?

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As of August 2026, Simmons Gainsford, part of the Sumer Group has approximately 160 employees across 2 continents, including Europe and North America. Key team members include Partner: A. H., Partner/Member: J. D. and 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?

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

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

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Simmons Gainsford, part of the Sumer Group's tech stack includes Xero, WordPress, CookieYes, Shopify, Mailchimp, Brevo, KnowBe4 and Piwik.

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

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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?

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

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.

Section iconCompany Overview

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, part of the Sumer Group's revenue is estimated to be in the range of $10M - $25M

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