Atkins said that David Tonkin had decided to step down from his role as UK & Europe chief executive officer “to focus on the health and wellbeing of his family and pursue a more family-centric phase of his life”.
He will be replaced by Nick Roberts, currently strategy and growth director for Atkins’ North America region.
Mr Tonkins, an accountant, joined Atkins in 2005. He was previously with Hanson.
The restructuring of the UK business was explained as “a realigning to meet evolving client needs”.
Group CEO Uwe Krueger said: “These changes position us better to deliver the technical capabilities, resources and innovation that will help our clients meet their business goals and solve the increasingly complex challenges we face.”
The Rail and Highways & Transportation divisions are coming together to form a single transport business.
The Defence, Aerospace & Communications division is merging with Management Consultants.
The Design & Engineering division and the Water & Environment division remain unchanged. There are also no changes to Faithful & Gould or the Energy division in the UK.
The transition to the new operating model will be completed by 1st April 2015, the company said. Nick Roberts will take up his new post on 1st December 2014.