The Management Team


Rob Stewart

Rob Stewart became Managing Director of RGA in January 2020, following the retirement of the Company’s founder, Stephen Ross-Gower.

A Chartered Structural Engineer,  Rob joined the practice as a Director in 2013 after having spent five years on the Island managing the structural department of a large design and build developer. This role involved the design of several large residential and commercial projects, with an emphasis on load-bearing masonry construction, RC transfer slabs, and piled foundations.

Rob recently became chairman of the Jersey Federation of Consulting Engineers

Prior to relocating to Jersey, Rob has had a varied international career spanning over 15 years. Having spent his formative years working for a large consultancy in London, he moved to Spain to work with a high-profile architect, designing a range of projects from sculptures to movable bridges.

He then moved to the USA to work for a large structural engineering consultancy, gaining valuable experience in areas such as high-rise, earthquake engineering, and post-tensioned concrete.

Rob’s career path to date has therefore resulted in him having a well-rounded and broad scope of experience, which is well suited to the varied demands of working within the practice. He also likes to keep a strong emphasis on the latest analysis and design software, including finite element analysis and building information modelling, (BIM).

Rob is kept busy raising a young family, but is also a keen golfer, and a Certified Checking Engineer under the registration scheme operated by SER.

Contact Rob at

Associate Directors

Mark Smith

Mark Smith came back to RGA in the late summer of 2015, having spent a few years with us a long time ago as a trainee Technician, leaving with an open invitation to return.  We are therefore delighted to announce Mark’s appointment as Associate Director with effect from the beginning of 2016.  Mark has an extensive knowledge of the local construction industry and is now an Incorporated Engineer.  He has taken over many of Chris’s projects and is now developing his own portfolio of new projects and can be contacted on

Debbie Le Long

Debbie recently qualified as an Incorporated Engineer (IEng MICE), therefore we are delighted to appoint her to the position of Associate Director.  Debbie has an extensive knowledge of the local construction industry and is now developing her own portfolio of new projects and can be contacted on

Andrew Morvan

Andrew has recently joined us with a unique set of skills. As a Chartered Mechanical Engineer, his recent experience on complex multi-disciplinary projects has persuaded him to change direction and now has the aim to become a Chartered Civil Engineer initially and a Chartered Structural Engineer in a few years’ time.  He is managing the transition really well and is quickly developing competence as a Civil Engineer and structural designer.  Andrew is primarily working closely with Mark and can be contacted on

Darreth Morison

Darreth Morison is now an Associate Director of RGA having become a full member of the Institute of Civil Engineers after being awarded the qualification Incorporated Engineer.  Originally from South Africa, where he studied Civil Engineering, Darreth spent two years working in the UK as a site engineer before moving to Jersey in 2009 when he joined RGA as a Civil Engineering Technician.  Darreth’s primary role in the firm is as the lead drainage and civil engineer.  Following Stephen Ross-Gowers’s resignation as Director of Ross-Gower Associates, Darreth will be taking over most of Stephen’s projects.  Darreth Morison, I.Eng. MICE, AaPS can be contacted on


Stephen Ross-Gower

Stephen founded Ross-Gower Associates in 1981 and was Managing Director until his retirement at the end of 2019, returning early in 2020 as Consultant.

Stephen was also the founding Chairman/Secretary of the Jersey Federation of Consulting engineers and was closely involved in setting up the Jersey Construction Forum in 1995. He was a member and then Chairman of the Chamber of Commerce Building and Development Committee from 1993 to 2001. He is a recent past Chairman of the C.I. Branch of the Chartered Institute of Arbitrators.

Contact Stephen at