Based out of Siemens' Global Center of Competence for Cities at the Crystal in the east of London, Mark oversees Siemens' city approach in the Nordics, the UK and Ireland.
In March 2013, Mark also took on the role of City Director for London - a key focus of the role is to support London's sustainable development through the provision of smart, efficient technological solutions and services for building, energy and transport infrastructure.
Mark joined Siemens in 1993 and since then has taken on a variety of roles and responsibilities across Siemens in a wide range of industries and markets in the UK, across mainland Europe, the Middle East and Asia.
On Bob Dylan, World Cups, and the true urgency of the climate challenge
Deadline for entry to this year's awards is 5pm today