About us

Everything we do is about the journey, building strong relationships based on mutual trust. We call it the delivery dynamic.

We are ISG. Our vision is to become the world’s most dynamic construction services company, delivering places that help people and businesses thrive.

Our 2,800 worldwide specialists in fit out, technology, and construction deliver not just buildings, but also an exceptional delivery dynamic and strong customer relationships built on mutual trust, collaboration, and open communication. We blend our unparalleled track record, sound processes and proven delivery methods with a fast-paced and agile culture, ensuring we deliver thriving places that are as responsive and resilient as their occupants.

For nearly three decades, ISG has been providing construction solutions to some of the world's most successful and enduring businesses, cities and institutions. Our customers trust us to deliver — and our repeat business and numerous industry accolades prove it.

Yet today’s fast-paced world demands more than a safe pair of hands. Delivering the places of tomorrow requires the ability to think big, collaborate widely and meaningfully, and build in real capacity for change. For this reason, everything we do at ISG, from our work with our customers to our relationships with our own people, is focused on delivering smarter and more resilient places of tomorrow.

ISG in 60 seconds

Our culture

"We are focused on becoming better, smarter, and more innovative than ever before."

Paul Cossell, CEO, ISG

Find out more about how our culture, vision, brand and values make us who we are.

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ISG differentiators

What makes us different?

Our five differentiators explain what makes ISG uniquely ISG. They are the core attributes of our brand, based on what our employees, clients, consultants and suppliers believe deeply and distinctively about us.

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Sustainability - ISG

Being a sustainable business

We want to be a great company in more ways than one—today and in the future. That means growing our profitability by delivering great projects for happy customers, while also looking after our people, the environment and our communities.

Everything that we do at ISG is about dynamic delivery, be that creating transformational places for our clients and consultants, ensuring an unbeatable customer experience or nurturing a culture that rewards great ideas.


ISG’s core values are at the centre of our governance strategy. The Statutory Board is the primary governance and oversight body for ISG, and its responsibilities include providing entrepreneurial leadership, approving long-term strategy, reviewing management performance and protecting our brand.

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ISG has a number of wholly owned subsidiary companies that complement our global offer to clients and expand the career opportunities for our people.

Tecton Engineering is a German-based building maintenance and infrastructure services company.

Annual Reports

Please see the latest company Annual Reports below. The directors are responsible for the maintenance and integrity of the corporate and financial information contained within the company’s website. Legislation in the United Kingdom governing the preparation and dissemination of financial statements may differ from legislation in other jurisdictions.

Some of our great partnerships

ISG Sustainability partnerships

Build UK Considerate Contractors ICRS Supply Chain School London Business Climate Leaders CDP RICS SKA