A forward thinking consultancy, Grontmij combines a multidisciplinary approach with access to international expertise to deliver robust and sustainable solutions.

Established in 1915, Grontmij is one of Europe’s largest multidisciplinary consultancy and engineering firms employing 8,000 professionals in the Netherlands, the UK, Ireland, Belgium, Denmark, Germany, Sweden, Poland and across the world.

Core sectors

In the UK and Ireland, Grontmij works with clients in the private and public sectors across seven main disciplines of strategic consultancy, water, climate and energy, buildings and landscape architecture, transportation, environment and contract consultancy.

Grontmij’s strategically located office network enables the consultancy to think globally and act locally.

Organic growth and strategic acquisitions

Consistent organic growth over the last five years has been supplemented by strategic UK acquisitions in the built and natural environment and in commercial consultancy. Our structure, size and strength mean that we deliver solutions to challenges on a local, national and international level.