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The Team

Together we have one goal

Introducing the Digital Railway team


Michael Flynn

Programme Director


Michael joined the Digital Railway in November 2016 as Programme Director to lead the next phase of the programme.

Michael joins us from his most recent role at Transport for London as Programme Director for the £16.5billion New Tube for London programme (NTfL). This programme will enable long-term business transformation for TfL on the deep tube lines, consequently transforming journeys for millions of passengers. During his time at TfL he has successfully led NTfL through its initiation phase, and launched the procurement of trains and signalling.

Prior to this he has worked for major international businesses in the both the UK and abroad including Siemens, Bombardier, Mitsubishi and Alstom. Michael is an experienced programme management and business unit director with over 28 years of experience in the rail and energy sectors.

Stuart Calvert

Managing Director, Group Digital Railway


Stuart joined the Digital Railway team in September 2016 to lead the Early Contractor Involvement programme working closely with the supply chain. In March 2019 he became the Interim Managing Director of Group Digital Railway.

He started his career as an engineering sponsored student with British Rail before specialising in project management and holds a Bachelor’s degree in Civil and Structural Engineering and a Masters degree in project management. He has over 30 years experience in major rail and infrastructure projects throughout the UK and Europe working as a Client, Contractor, Consultant and Manufacturer having held senior executive roles with Railtrack, Bombardier Transportation and Jacobs Engineering. Most recently he has been Managing Director of an SME specialising in the design and manufacture of safety critical products used in rail and other specialist engineering industries.

Stuart has written and lectured on the subject of project stakeholder management and has a keen interest in skills development and training. He is a Board member of the National Skills Academy for Rail.



Group Digital Railway is a national function of Network Rail. Collectively, the group delivers information and telecoms services that keep the railway running today – whilst working with industry partners to introduce new technology and digital solutions to support the future growth of rail and the UK economy.

As Managing Director of Group Digital Railway, Stuart oversees the strategic operation of the four business units which form the group: two service providers; Asset Information Services and Network Rail Telecom and two national programmes; and the cross-industry Digital Railway programme.

Andrew Simmons

Chief Systems Engineer


Andrew started his career as a graduate trainee with London Underground. In 1986 he joined the Mass Transit Railway Corporation in Hong Kong, and was responsible for the Eastern Harbour Crossing signalling system. In 1990 Andrew returned London Underground to become the Signalling Project Engineer for the Central Line modernisation including the introduction of ATP and ATO systems.

In 1999 Andrew joined Railtrack as the Professional Head of Signal Engineering and carried out this role until November 2007, when he took up a new position of Director, Future Train and Operational Control Systems within Network Rail. In this role he provided technical leadership to the implementation of the final phase of the West Coast Route Modernisation which facilitated higher frequency train services on the West Coast Mainline. He also initiated the development of what are now Digital Railway systems (ETCS and Traffic Management) including technical leadership to the Cambrian ETCS project.

In April 2013 Andrew took up the position of Technical Development Director in the Network Operations Strategy team. Since December 2015 Andrew has been in the role of Chief Systems Engineer for the Digital Railway development team.