All of our consultants and associates are highly experienced individuals who share a passion for bringing their knowledge and experience to bear as a team to client projects. The majority have been working for Stockton for many years, many since its formation in late 2005. Our selection process is rigorous and we always select new consultants based on proven technical ability, thus ensuring they are capable of delivering the client requirements working either as an individual or as part of a team.

Martin Bayliss A railway engineer for more than thirty years. Martin was instrumental in bringing Risk Analysis techniques to London Underground. More recently he has developed and run courses on risk assessment and was a compliance manager, systems assurance manager and signalling project engineer. Consultancy clients include Tube Lines, London Underground, Crossrail, Network Rail, Bombardier, Edmund Nuttall and TCI Consultants. Martin has worked for Stockton since our formation in 2005.
Ralph Pantelides has provided system safety justifications for London Underground, Network Rail and Crossrail.  Projects including Jubilee and Northern line upgrade project, LU P&C renewals, NR Thameslink High Capacity Infrastructure, and LU Four Lines ModernisationRalph has also worked on RAMS safety cases and managed systems performance modelling projects at the UK Civil Aviation Authority and National Air Traffic Services.  At Crossrail, Ralph produced the system-level infrastructure safety justifications for the Elizabeth line entry into ROGS, Trial Running, Trial Operations and Revenue Service.  Ralph has worked for Stockton since its formation in 2005.
Stephen Turner has led technical assurance for several major infrastructure programmes through trials and into revenue service, from the Jubilee Line Extension Project as the Train Systems Assurance Manager (1999) to the Crossrail Central Operating Section as Head of Assurance (2022). He was lead consultant to Tube Lines for the Jubilee Northern Lines Upgrade Project, assuring the TBTC signalling system from cross acceptance into revenue service on both lines, and to TfL for the 4 Lines Modernisation Programme CBTC signalling system initial two migration sections into revenue service. He has advised on tender preparation and tender evaluations and on application of engineering safety management throughout the project lifecycle. Stephen is an experienced Safety Assessor. Stephen has worked for Stockton since our formation in 2006.
John Colvin - A Chartered Electrical Engineer who holds an Honours Degree from Oxford. A highly experienced manager and signal engineer with over 40 years’ experience in the Signal Installation and Maintenance fields a majority of which were spent at senior management level in LU. John was promoted very quickly within LUL culminating in him being appointed General Manager Signal & Electrical Contractors in 1987 responsible for all signal installation and maintenance, communications, lighting, cabling and ticketing systems. In this position John was accountable for a budget in excess of £50m pa with 1,700 staff. Notable achievements in this role include, Installation of the first transmission based signalling system in the UK for the Docklands Light Railway, Negotiation and profitable execution of major resignalling and communications projects in the UK and Australia with a typical value of £5m plus and Increasing productivity of in-house workforce by 23% over a two year period. Latterly John became a Director of Metro Consulting and Mouchel Rail where he was responsible for winning the JNUP Signal Installation contract (Value £52m GBP) which was the single largest contract Mouchel had ever had.  An exceptionally talented engineer and manager respected throughout the industry and able to operate easily at strategic level. John has been contributing his experience and expertise on Stockton assignments since 2014.
Mike James has a detailed knowledge of rolling stock maintenance, hazard database management and systems approvals management. A mechanical engineer and industrial engineer, Mike first started working at London Transport over 35 years ago. As well as London Underground, Mike’s clients have included Network Rail and Viacom Outdoor, RFLI and Crossrail. Projects have included the Jubilee and Northern line Upgrades, LU World Class Capacity, the LU Four Line Modernisation and Crossrail.  Mike has been providing his expertise and experience to Stockton assignments since our formation in 2005.
Kevin Young has provided engineering safety cases for both signalling system and control centre upgrades for London Underground and Crossrail.  Projects include Jubilee and Northern line upgrade, Victoria Line upgrade, Piccadilly Line, LU Four Lines Modernisation and Elizabeth line. Kevin has also worked as a project team leader and assessor on the development of avionics systems for the Merlin helicopter and the Boeing 777. Kevin has worked for Stockton since our formation in 2005.
Kevin Mears : BSc(Hons), BA, MIET, MIRSE is a Railway Signalling Engineer with over 45 years’ experience in signalling design, design management, and engineering safety. A broad experience in all types of signalling systems, including mechanical signalling, relay interlockings, computer based interlockings, Automatic Train Operation, transmission based signalling systems, signalling control systems, level crossings and control centre design. Experience in mainline, metro and industrial railway systems both in the UK and abroad. Knowledge of CENELEC 50126, 50128 & 50129 and Common Safety method (CSM) and signalling systems cyber security risk assessment. Kevin has worked on many successful major projects and has a broad experience not only within signal engineering but also has a good understanding of other railway disciplines and operations.  He managed the technical aspects of a major control centre development project with responsibility for operations, human factors, systems engineering and software development.  Kevin has been a Stockton consultant since 2017 working most recently on the LU Four Lines Modernisation and the Elizabeth line.

David Hunt is a Principle Design Engineer and Signalling Design Assurance Manager with over 35 years of diverse signalling project delivery and signalling design/verification experience on vital signalling systems in the UK London metro sector.  David has been providing his expertise and experience to Stockton assignments since 2018.

Lou Baxter has more than 20 years of experience in technical safety assurance and risk management in the rail, marine, oil, gas and LNG industries. Projects worked on have been in the UK, United States, Australia, Poland, Germany, Dubai, Qatar and Canada.  Lou has worked as Safety Assurance Manager / Engineer on the supplier and client side of major flagship re-signalling UK projects such as Thameslink (ETCS), the Jubilee Line and Crossrail.  She has also been heavily involved in other infrastructure projects such as station upgrades and the electrification of the UK's Great Western Main Line, as an Independent Safety Assessor.  Lou has extensive knowledge of Engineering Safety Management and international standards (CENELEC 50126/8/9) and regulations such as the Common Safety Method, and has applied rail systems and safety engineering at all stages of the project life-cycle.  Lou has been contributing to Stockton assignments since 2020.