Company Staff

Thameswey's Senior Management Team:

Mark Rolt

Chief Operating Officer

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Mark is the Chief Operating Officer for the Thameswey Group having previously been a non-executive Director of most of the group companies. In addition to his role as C.O.O, Mark is also a  Director at Woking Borough Council. Mark has an undergraduate honours degree in Biological Sciences (Birmingham), a post-graduate diploma in Environmental Health (Middlesex) and a Masters in Business Administration (Kingston). Mark is responsible for the whole group activity and staff but has a specific focus on the commercial expansion of the group and residential development.

Debbie Taylor

Chief Financial Officer


Debbie is the Chief Financial Officer for the Thameswey group. Debbie has been working in the commercial service sector for over 20 years. Debbie qualified as an accountant in 2006, and has since completed a Post Graduate Degree in Leadership at Worcester University. Debbie is responsible for the financial performance within Thameswey Group and ensuring accurate robust financial reporting is managed for both corporate compliance and  business support.

Sean Rendall

Operations Manager

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Sean is responsible for the day-to-day running of Thameswey’s energy businesses in Woking and Central Milton Keynes. This includes a total of approximately 10 MW of gas-fired CHP plant, district heating and private wire networks. Prior to joining Thameswey, Sean spent over twenty years in local authority planning services advising on sustainable development policy and practice, with an emphasis on climate change and energy planning.

Mark Goodwill

TMSL General Manager

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Mark is responsible for the day-to-day running of Thameswey Maintenance Services Limited in Woking and Central Milton Keynes. this covers CHP and commercial Gas contracts for its clients. Mark comes from a Military background with retraining in the Electrical industry and Building maintenance. Previous roles include an M&E manager for a national provider and Technical Services Manager working in partnership with the University of Reading.

Ian Lelliott

Head of Residential Services


Ian has been involved with Thameswey since 2006 on a variety of housing projects providing technical support to the team. He became directly employed in Feb 2016 to focus on the management of our expanding and diverse housing portfolio.

His experience and qualifications has been gained via working as a private contractor and in technical roles with London Authorities and Woking Borough Council spanning across the building industry from a trade background through to Building Surveying and Asset Management.