Oakervee’s successor has been announced as current Network Rail chief executive Sir David Higgins, who will join HS2 on 1 January 2014 on a part-time basis before taking up the post full-time from March.

Doug Oakervee, a distinguished civil engineer and former chairman of Crossrail, took up the post of HS2 chairman in April last year. Oakervee has overseen the development of the detailed proposals for the new HS2 line and laid a foundation for the delivery of the rail project.

Patrick McLoughlin, secretary of State for Transport, said: "The fantastic work that Doug Oakervee has delivered as chairman of HS2 is testament to the experience and expertise that he brought to this role.

"His energy and professionalism have ensured that the detailed proposals for Phase One of the country’s first high speed line north of London will be introduced to Parliament on schedule later this year.

Oakervee said: "I believe HS2 is vital to the growth of the UK economy and will deliver the capacity our rail network sorely needs. Sir David is the right man to continue the delivery of this project. I am delighted at his appointment and am confident that alongside Alison Munro, our chief executive, he will continue to drive the scheme forward."

Higgins added: "I am delighted to be taking up this role. Working at Network Rail I know the challenges we have ahead with capacity on the railways – they are real and we need to take action now. I also know the significant benefits that improved journey times between our northern cities will bring not just to the north, but the UK economy as a whole.

"HS2 is the right solution. It is vital for both passengers and the economy, and will put the UK in a different league in terms of infrastructure. My first priority will be to rigorously scrutinise costs to ensure they remain under control."