Working in the subsea environment​

With years of experience working in the subsea controls sector, we understand customer drivers and priorities. Our specialist team focus on delivering competitive and timely engineering solutions.

Delivering competitive, timely -engineered solutions​

The culture at J+S Subsea is based on collaboration and communication with clients and it is essential for delivering competitive, timely-engineered solutions. J+S Subsea is leading the way in the Oil & Gas industry through our Legacy Locker service to optimise the value of existing, unwanted capital equipment and utilising a circular economy approach to business.

Marine Renewables

J+S Subsea is committed to adjusting economic, social and environmental behaviours to build a resourceful and sustainable future. By applying our knowledge and experience in power and signal cable applications, we can work towards this along side our clients. We have also developed a business in Marine Renewables.

We are delighted to have had an article published in the May edition of the Subsea UK magazine. We talk about how as a company we are working towards Net Zero and our latest Legacy Locker win. This work earned us a spot as finalists in the Excellence in Collaboration awards at Decom Week 21

News & Events

J+S Subsea’s Kairvee Tyagi Wins Prestigious Young Professional Award at Decarb Scotland 2025

J+S Subsea is proud to announce that Kairvee Tyagi has been awarded the Young Professional Award 2025 at the Decarb Scotland Conference, held on 13th March. This prestigious accolade was presented by Dr Alasdair Allan MSP, Minister for Climate Action, and recognises outstanding contributions from emerging leaders in the field of decarbonisation and energy transition.

Kairvee has played a pivotal role in promoting sustainability within the subsea sector, particularly through her work on the Legacy Locker initiative—a pioneering project that supports the circular economy by repurposing and refurbishing subsea equipment. Her expertise in carbon reduction strategies and commitment to developing sustainable solutions have made a significant impact at J+S Subsea.

As a key advocate for innovation in energy transition and decarbonisation, Kairvee has worked tirelessly to drive forward initiatives that not only support net-zero ambitions but also promote cost-effective and environmentally responsible solutions for subsea operations. Her achievements reflect the core values of J+S Subsea, demonstrating how young professionals are shaping the future of sustainable energy.

Mark Hughes – Chief Operating Officer, NECCUS. Craig Jackson – Director, ZedTalent. Kairvee Tyagi – Environment and Sustainability Advisor, J+S Subsea. Dr Alasdair Allan – Acting Minister for Climate Change, Scottish Government. Dr Philippa Parmiter – Chief Executive Officer, NECCUS.

Speaking about her award, Kairvee said:
”It is an incredible honour to receive the Young Professional Award. Sustainability and decarbonisation are at the heart of everything we do at J+S Subsea, and I am proud to contribute to the industry’s transition towards a cleaner, more responsible future. This recognition is not just for me, but for the entire team working towards these goals.”

Lucinda Craig, Business Development Director of J+S Subsea, commented:
”Kairvee’s dedication and expertise are truly inspiring. She represents the next generation of leaders in sustainable energy, and we are delighted to see her hard work recognised on such a prestigious platform. This award is a testament to her passion and commitment to making a real difference.”

The Decarb Scotland Conference brings together industry leaders, policymakers, and innovators to discuss the latest advancements in industrial decarbonisation, renewable energy, and sustainable development. The Young Professional Award highlights emerging talent who are driving the industry forward through knowledge, leadership, and innovative thinking.

J+S Subsea extends its congratulations to Kairvee on this well-deserved achievement and looks forward to continuing its commitment to sustainability and energy transition in the subsea sector.

Craig Jackson – Director, ZedTalent, commented – It is a genuine pleasure to support this award and help shine a light on the next generation of talent in Energy Transition sector. Kairvee is a standout young professional—driven, capable, and already making a real impact. It’s inspiring to see the future of our sector in such capable hands.

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Mark Patterson Non-Executive Chair

Mark Patterson

Non-Executive Chair

Mark’s career spans five decades, marked by entrepreneurial success and visionary leadership across various sectors, including offshore marine technology, subsea oil and gas, green energy storage, and more.

With a track record of leading businesses through start-up, growth, acquisitions, and transformations, Mark’s expertise lies in strategic decision-making, mentoring, and brand management.

He has overseen multimillion-pound projects, pioneered new technologies, and guided companies to international recognition, such as the underwater GPS NASNet®.

His leadership style is direct, inclusive, and based on trust, empowering teams to excel.

Mark’s achievements include managing high-profile global companies, such as Balmoral group, Nautronix and Well-Safe Solutions, where he played key roles in groundbreaking projects. Global explanation and high growth.

Outside of business, Mark is deeply committed to family and charity work, with a passion for shooting, boating, and car collecting. As an experienced executive, he remains dedicated to fostering success by identifying future opportunities and mentoring the next generation of leaders.

Mark Patterson Non-Executive Chair

Mark Patterson

Non-Executive Chair

Mark’s career spans five decades, marked by entrepreneurial success and visionary leadership across various sectors, including offshore marine technology, subsea oil and gas, green energy storage, and more.

With a track record of leading businesses through start-up, growth, acquisitions, and transformations, Mark’s expertise lies in strategic decision-making, mentoring, and brand management.

He has overseen multimillion-pound projects, pioneered new technologies, and guided companies to international recognition, such as the underwater GPS NASNet®.

His leadership style is direct, inclusive, and based on trust, empowering teams to excel.

Mark’s achievements include managing high-profile global companies, such as Balmoral group, Nautronix and Well-Safe Solutions, where he played key roles in groundbreaking projects. Global explanation and high growth.

Outside of business, Mark is deeply committed to family and charity work, with a passion for shooting, boating, and car collecting. As an experienced executive, he remains dedicated to fostering success by identifying future opportunities and mentoring the next generation of leaders.

Phil Reid Managing Director J+S-Subsea

Phil Reid

Managing Director

Phil has worked in the energy industry for over 25 years. He started his career with Kvaerner FSSL progressing through a variety of roles in subsea engineering, from manufacturing to leading some of their most complex projects all over the world. He worked with the original J+S for a period before moving on to Genesis Oil and Gas as a Subsea Controls Engineering consultant; during that period, he was seconded to Centrica Energy (now Spirit Energy) which led to a permanent role as Lead Subsea Controls & Umbilical Engineer for Developments, Capital Projects and Operated Assets. For almost a decade Phil successfully delivered Capital Projects from concept right through to project close out whilst also looking after the running of their subsea assets.

As part of J&S Subsea limited, Phil oversees the day-to-day operations and will grow the business both in the UK and globally. 

James Morris

Engineering Director

James’s career started when he joined the Royal Navy from school as an Artificer Apprentice. After a 5-year Marine Engineering Apprenticeship he served in surface ships HMS Glamorgan, HMS Edinburgh, and HMS Glasgow and at Rosyth as part of an engineering support team. 

Moving into the Energy Industry in 1992, over the next 26 years he gained a wealth of experience within large and small companies on operation, design and project management of subsea control systems and equipment. This period started with several years as a Project Engineer for a family run hydraulic services company Grampian Hydraulics followed by 5 years as a Support Engineer at Kvaerner Oilfield Products.  James joined RRC Controls Services ltd in 2001 before finally moving to J+S Ltd in 2010. At J+S his dedication and technical capabilities were rewarded with several promotions until becoming a member of the management buyout team. 

He has designed an extensive array of subsea equipment from basic cable penetrators to complete subsea control modules. 

James thrives on providing solutions for client’s problems. 

As Engineering Director, James will ensure that the company provides clients with timely, cost effective and technically sound solutions and services. 

Matthew Blair

Executive Chairman

Matt Blair is Executive Chairman of J+S Subsea which was formed in October 2020 through a management buyout of the Subsea Engineering Division of Systems Engineering and Assessment Ltd.

With J+S Subsea and SEA for over 14 years, Matt has a wealth of industry knowledge and expertise.

Previously an Electronics Engineer with Ferranti Computer Systems Ltd specializing in sonar and submarine command systems, Matt moved into hydrographic survey working with Subsea7, Tritech, and CDL before joining J+S Subsea.

He was Vice Chair of the Decom Leadership Group of Decommission and in that role, he facilitated industry and academic studies on potential for reuse and repurposing of decommissioned equipment. He is still actively involved with the reuse agenda through Decommission and OEUK.

Although not part of day-to-day operations, Matt stays close to company strategic matters and is seeking further opportunities to update and transfer Energy technologies and products into the Marine Renewables markets and help to develop the broader circular economy.