Gary joined the Department of Mechanical Engineering in 1995 after careers with the National Coal Board and the Royal Navy.
In 2004, he was awarded the IMechE Automobile Division Crompton-Lanchester Medal for the best paper on automobile engineering.
In 2007, Gary was awarded the Chair of Engineering in recognition of "excellent academic research and its applications to industry".
He has an extensive record of successful engagement with the automotive industry. He has lead many projects in collaboration with industry, and especially with the Ford Motor Company.
In 2014, he was elected to the Trustee Board of the Institution of Mechanical Engineers (IMechE). The Trustee Board is responsible for the governance and control of the Institution with the mission statement "improving the world through engineering".
In the same year, he successfully led a £2.4 million EPSRC proposal to establish the Centre for Low Emission Vehicle Research (CLEVeR).
Gary created the Powertrain and Vehicle Research Centre (PVRC), which has attracted over £20 million in research funds over the past 20 years. In 2015, the centre was awarded the Spoke for Internal Combustion Engines – Systems Efficiency as part of the Advanced Propulsion Centre in recognition of its expertise, capability, network of academic and industrial partners, and standing in the field.