Mark draws on more than 35 years of experience leading complex and critical infrastructure programmes in both public and private sectors in the UK and abroad.

The majority of his experience has been in operating or building major transportation infrastructure including as MD of Westinghouse Signals, CEO of Public Transport Victoria (Melbourne, Australia), and MD of London Underground - one of oldest and largest oldest metro systems in the world with over one billion journeys a year and 20,000 employees. He has a proven track record of delivering transformational change on some of the largest and most complex projects around the world.

As CEO of Crossrail (2018-2022) in London, a £20bn programme delivering one of the world’s most advanced high-frequency passenger rail services, he implemented a rescue and recovery of the programme following earlier cost and schedule delays in 2018. This included rebuilding the organisation, completing construction of the programme and the integration into one of the most successful and celebrated new operating railways in the world – now known as the Elizabeth line.

In addition to driving organisational change and delivering major schemes to successful completion, Mark puts safety and sustainability at the heart of his ethos, and is also passionate about helping to develop a new and diverse generation of engineers to lead the industry.

Mark awaits the start of his next role as Chief Executive Officer of HS2 Limited, leading one of the largest infrastructure programmes in the UK - Britain’s newest, high speed railway stretching over 140 miles between London and Birmingham and employing over 30,000 people.

Mark will join HS2 Ltd from SGN, one of the UK’s largest gas distribution networks, servicing 7 million customers in Scotland, Southern England and Northern Ireland.

Mark grew up in Durham in the North East of England. He is a Fellow of the Royal Academy of Engineering, has a 1st class engineering degree and an MBA from Leeds University.