Insights

Sustainability leadership ISG’s recent Best of BREEAM 2024 Award for Refurbishment & Fit Out highlights a strong sustainability focus and expertise in sustainable building practices, signaling opportunities for green retrofit projects and energy efficiency initiatives.

Acquisition momentum Historical acquisitions such as Cathedral Contracts and Kent-based expansion indicate a growth trajectory, suggesting potential upsell across larger retail fit-out programs and integrated delivery services for expanding client portfolios.

Digital delivery A robust tech stack including Sitecore, Adobe Experience Cloud, Microsoft Azure, Wrike and Autodesk points to advanced project management, digital collaboration and BIM-enabled workflows, enabling scalable solutions for large complex projects and client-centric digital experiences.

Workforce development ISG’s focus on talent through initiatives like Wide Angle and the Construction Skills Academy demonstrates a commitment to workforce development, creating opportunities for partnerships in training contracts, supplier diversity programs and long-term staffing solutions on major projects.

Community and career access Open Doors partnership and commitments to inspiring construction careers indicate potential for social impact collaborations, marking opportunities to co-create programs for youth and underrepresented groups while aligning with client corporate social responsibility goals.

Similar companies to ISG

ISG Tech Stack

ISG uses 8 technology products and services including LinkedIn Ads, Hotjar, Microsoft Clarity, and more. Explore ISG's tech stack below.

Media & News

ISG's Email Address Formats

ISG uses at least 6 email formats:
ISG Email FormatsExamplePercentage
First.Last@isgplc.comJohn.Doe@isgplc.com
87%
FLast@isgplc.comJDoe@isgplc.com
10%
First.Middle@isgplc.comJohn.Michael@isgplc.com
2%
FirstLast@isgplc.comJohnDoe@isgplc.com
1%
First.Last@isgltd.comJohn.Doe@isgltd.com
99%
First.MiddleLast@isgltd.comJohn.MichaelDoe@isgltd.com
1%

Frequently Asked Questions

What is ISG's phone number?

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You can contact ISG'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 ISG's stock symbol?

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ISG is a publicly traded company; the company's stock symbol is OISGX.

What is ISG's official website and social media links?

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ISG's official website is isgltd.com and has social profiles on LinkedIn.

How much revenue does ISG generate?

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As of October 2026, ISG's annual revenue is estimated to be $1B - $10B.

What is ISG's SIC code and NAICS code?

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ISG's SIC code is 7372 - Prepackaged Software and NAICS code is 23 - Construction.

How many employees does ISG have currently?

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As of October 2026, ISG has approximately 2K employees across 6 continents, including Europe, North America and Asia. Key team members include Ceo: D. W., Cfo: S. B. and Chief Human Resources Officer: J. F. Explore ISG's employee directory with LeadIQ.

What industry does ISG belong to?

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ISG operates in the Construction industry.

What technology does ISG use?

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ISG's tech stack includes LinkedIn Ads, Hotjar, Microsoft Clarity, Sitecore, Adobe Experience Cloud, Microsoft Azure, Wrike and Autodesk.

What is ISG's email format?

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ISG's email format typically follows the pattern of First.Last@isgplc.com. Find more ISG email formats with LeadIQ.
ISG logo

ISG

ConstructionEngland, United Kingdom1001-5000 Employees

ISG is a construction services company based in London, United Kingdom, with a headquarters at 33 Aldgate High Street, London EC3N 1AG. The business operates in the construction industry and reports a global workforce of 2,800 specialists, with a stated employee range of 1,001 to 5,000. ISG focuses on delivering spaces and places that support the daily operations of people and businesses, combining established delivery methods with an agile, fast-paced culture. The company has grown through acquisitions, including the 2007 purchase of Kent-based Cathedral Contracts Ltd for £11.8 million, expanding its retail fit-out capabilities. In 2024, ISG was awarded the Best of BREEAM 2024 Award for Refurbishment & Fit Out for the Northcliffe House refurbishment.

Section iconCompany Overview

Phone number
Website
isgltd.com
SIC Code
7372 - Prepackaged Software
Stock Symbol
OISGX
NAICS Code
23 - Construction
Employees
1001-5000

Section iconFunding & Financials

  • $1B - $10B

    ISG's revenue is estimated to be in the range of $1B - $10B

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