InSite Technical Services Limited (InSite) is a UK-based engineering consultancy with an international footprint, delivering expert engineering design, project management, and technical support across a range of energy and industrial sectors. With a strong track record in the oil refining, terminals, LNG, and renewables industries, InSite is committed to helping clients meet the challenges of the energy transition and deliver projects that support a more sustainable future.
Our team of experienced engineers brings technical expertise and industry insight to every project, offering value, assurance, and innovative thinking from concept to execution. InSite specialises in conceptualising, designing, and supporting projects that have a lasting, positive impact on the world of tomorrow.
A unique strength of InSite is our deep understanding of client needs, many of our team members have worked on the operator side of the industry. This experience gives us valuable insight into the real-world pressures of running complex processing sites: from maintaining continuous operations and managing turnarounds, to meeting stringent safety and environmental standards. We know how to design projects that integrate seamlessly into existing operations and stakeholder environments, and we structure our delivery accordingly to provide an excellent and practical service to our clients.
InSite has extensive experience in delivering FEED and detailed engineering for oil and gas, renewable energy, gas processing facilities, and modular skid packages. Our capabilities span process design, equipment specification, layout and piping design, instrumentation, electrical, civils and structural, and safety studies; resulting in fully integrated, cost-effective, and reliable engineering packages. We have successfully supported numerous projects from concept to construction, ensuring smooth integration of modular solutions within larger facility contexts. Our team’s detailed knowledge of gas treatment, compression, and processing technologies enables us to identify challenges early and design solutions that are both robust and fit-for-purpose.
As part of the international Vulcain Engineering Group (Vulcain), InSite benefits from strong cross-entity collaboration. This networked approach gives us access to additional expertise and resources, strengthening our ability to deliver projects effectively. Vulcain operates in strategic sectors such as energy, infrastructure, industry, and transport offering tailored solutions to complex technical challenges worldwide. The support of the group enhances InSite’s capacity to scale and innovate, while maintaining a strong client focus and responsive delivery.
Why Choose Us?
- Multidisciplinary Expertise: A one-stop solution for all engineering needs.
- Collaborative Approach: Working with you, not just for you.
- Commitment to Excellence: Delivering high-quality, practical solutions every time.
We Strive to Be the Best
At InSite, we are committed to excellence in everything we do. Our team is driven by a passion for innovation, continuous improvement, and delivering high-quality engineering solutions that make a tangible difference. We believe in working ‘With, Not For’ our clients, building lasting partnerships based on trust, collaboration, and shared success, with a culture rooted in accountability and a commitment to learning.
Our Approach
We take a client-focused, solution-driven approach to engineering. By understanding our clients’ challenges and objectives, we deliver tailored, practical solutions that add real value. Our multidisciplinary expertise, combined with a proactive mindset, ensures we provide innovative yet reliable solutions that optimise performance, enhance safety, and drive efficiency.
Meet Our Management
Jean Martin
Managing Director
Jean Martin CEng MIMechE
A chartered mechanical engineer, Jean is a seasoned professional with a 23 year career in Refining, leading to her current role.
Managing Director of InSite and one of the founders of our company, she heads a team of over 100 staff providing technical and engineering services to industrial clients.
As a consultant within the team, she provides advice to a wide range of clients on issues of mechanical integrity and operations excellence.
Jason O’Malley
UK Sales Director
Jason O’Malley, CEng MIChemE is responsible for strategic growth and client relationship management.
Jason is a Chartered Chemical Engineer with over 20 years’ experience in the Oil & Gas industry. He has a proven track record in project management and leading process design teams through all project phases from concept to commissioning. He has worked on a wide range of projects, from brown field debottlenecks to major green field facilities. Jason has particular expertise in design and operation of oil refineries and onshore oil & gas production facilities. He has extensive experience in senior operational and technical roles at both operating and EPC companies.
Tom Johnston
Technical Director
Tom Johnston, BEng oversees all elements of the engineering service delivery that the company provides.
Tom has successfully delivered engineering project design packages and technical consultancy services to local and international clients. He was previously the operations manager at a UK oil refinery where he had a clear vision for safe and reliable operation as well as continuous improvement. His significant technical experience of process engineering support and refining operations backed up by solid process design experience in oil refining and petrochemicals allows him to deliver technically excellent projects for clients in a range of sectors
Jon Scarr
Finance Director
Jon Scarr, CEng MIChemE is responsible for all financial aspects of the company’s business.
Jon is a Chartered Chemical Engineer with over 15 years’ experience in the oil & gas industry. Prior to co-founding InSite, he held engineering positions at both large EPC contractors and operating sites within the petrochemical industry. At InSite he was Operations Director before switching roles to Finance Director shortly after InSite joined the Vulcain Group in 2021. Jon works closely with the InSite team to set and achieve the Budget, and supports other entities within the Vulcain Group.
Gary Morgan
Chief Engineer
Gary Morgan, IEng MIMechE joined InSite in 2018 after completing a major revamp project in the upstream North Sea sector. As Chief Engineer, he acts as technical authority, ensuring that InSite’s standards, processes, and technical output meet the highest levels of compliance and reliability. He also leads our consultancy offering, working closely with the senior management team to develop and expand this service.
With over 35 years of experience in integrity management, inspection and reliability, operations, and project engineering across the Oil, Gas, Chemical, and Energy sectors, Gary has developed extensive knowledge of Top-Tier COMAH sites and maintains strong working relationships with the UK regulator.
Mathew Howells
Operations Manager
As Operations Manager at InSite, Mathew is responsible for the day-to-day running of the business and the continual improvement of its operations. He oversees project and engineering delivery, business performance, and internal systems, ensuring the company operates efficiently and delivers consistent, high-quality outcomes for clients. Mathew also plays a key role in developing people, promoting collaboration, and strengthening InSite’s reputation for operational excellence.
An Electrical Engineer by background, Mathew has extensive experience in design, installation, commissioning, and maintenance across the Oil & Gas, Metals, and Power Generation industries. Before joining InSite, he held technical and project engineering roles that developed his strong foundations in electrical design, project execution, and multidisciplinary coordination.
Since joining InSite, Mathew has progressed from an engineering role into engineering management and now operations leadership, combining hands-on technical experience with strong leadership and commercial awareness. His focus on effective delivery, business performance, and sustainable growth ensures InSite continues to evolve as a trusted and forward-looking engineering consultancy.
Mickaël Alusse
Business Development & Execution Manager
Mickaël is an experienced Principal Project Engineering Manager with a wealth of knowledge spanning engineering design, project and maintenance planning, execution, cost control, and quality assurance.
He has successfully managed numerous projects from design through to completion, consistently delivering on time and within budget. With strong leadership and team management skills developed through international experience, Mickaël combines deep technical knowledge in structural design, steelwork fabrication, and construction with a practical, hands-on approach to project delivery.
Sam Irwin
Engineering Manager
Sam Irwin, BEng MIET | TÜV SÜD is a Control and Instrumentation Engineer with over 20 years of experience in Electrical, Control, and Instrumentation within the Oil & Gas industry. He has worked extensively on the client side for Top-Tier COMAH operators, contributing across all phases of project delivery.
Specialising in Functional Safety, Sam supports both midstream and downstream operations, bringing deep technical expertise and a strong focus on compliance. His leadership and management experience ensure that multi-disciplinary engineering teams are well-coordinated, supported, and consistently deliver high-quality outcomes across complex projects.
Osian Rees
Project Engineering Manager
Osian is a Mechanical Engineer with over 20 years of experience leading and managing design activity within multi-discipline engineering teams. His background spans the full project lifecycle—from engineering and procurement through to construction and commissioning—on large-scale process technology projects across multiple industry sectors.
Osian’s key strength lies in his detailed mechanical engineering expertise combined with the ability to make informed, pragmatic decisions that help resolve project challenges and drive successful outcomes.
Dai Cox
Technical Proposals Manager
Dai Cox, CEng FIChemE
Dai is a Chartered Chemical Engineer and Fellow of the Institution of Chemical Engineers, with nearly 30 years of experience in engineering design and management across both upstream and downstream sectors of the oil and gas industry.
Since joining InSite in 2018, Dai has led the sustained growth and evolution of the Process Engineering team, delivering consistently high-quality engineering packages to clients. His leadership has been instrumental in shaping the team’s technical excellence and collaborative culture.
Dai is also deeply committed to developing the next generation of engineers. He has been pivotal in establishing InSite’s mentoring programme and driving initiatives such as the Year in Industry scheme, graduate recruitment, and structured training programmes for early career professionals.
Philippa Saunders
Business Performance Manager
As Business Performance Manager at InSite, Philippa leads the continuous improvement of business operations. She works closely with teams across the organisation to drive efficiency, enhance performance, and ensure alignment between business goals and project delivery.
With a background in Chemical Engineering, Philippa brings a valuable technical perspective to business performance, connecting strategic objectives with the realities of project execution. Her experience enables her to identify opportunities for improvement, embed a culture of accountability and growth, and empower teams to deliver their best work for both the business and its clients.
InSite formed by 6 members of the Milford Haven Refinery team upon site closure in December
InSite deliver engineering and consultancy services to clients locally and abroad. InSite signs Framework Agreement with UK LNG terminal.
InSite achieves ISO9001 certification for its Quality Management System.
InSite team grows to 35.
InSite forms a strong working relationship with major UK oil refinery to provide engineering design and project management services supporting the CAPEX programme.
InSite Framework Agreement with 2nd UK LNG terminal. InSite sets up an apprentice scheme to develop today’s talent into the engineers and designers of tomorrow.
InSite purchases 1 Cleddau Bridge; providing additional capacity for growth.
First work won in the renewables sector.
Significant FEED project completed for European refinery.
InSite becomes part of Vulcain Engineering Group, increasing our capability and geographic reach.
Increasing focus on energy transition projects, helping refineries to reduce their carbon impact. InSite achieves ISO45001 certification for its Safety Management System.
InSite wins Framework Agreement with a 3rd refinery, located in Western Europe. Engineering Graduate scheme accredited by ECITB
InSite achieves ISO14001 certification for its Environmental Management System.
First contract won in Northern European petrochemical site. New contracts in Welsh infrastructure projects
