At CST, our leadership team is driven by a shared commitment to innovation, integrity, and excellence. With decades of experience across key industries, our leaders guide the company with a clear vision and unwavering focus on delivering value to our clients, partners, and communities. Together, they shape the strategic direction of CST and foster a culture of collaboration, accountability, and growth.
James founded CST in 1993 with a clear vision: to build a technology company grounded in exceptional service, innovation, and trust. Drawing on his extensive background in project management at IBM, where he led high-profile projects for clients including Cazenove, Lloyds, VW, and NatWest. James brought both technical insight and strategic leadership to CST from day one. His passion for technology and dedication to client success have shaped the company’s culture and fueled its steady growth over the decades.
Paul Tucker
Chief Operating Officer
Paul joined CST in 2011 and has played a pivotal role in reshaping the company's operational framework. With a strong foundation in technical expertise and a deep understanding of client needs, Paul has built and led a high-performing service team known for delivering innovative solutions on even the most complex projects. His leadership has been instrumental in aligning CST’s capabilities with evolving industry demands, ensuring the company stays ahead of the curve. Today, Paul drives the development of new service offerings and actively identifies strategic growth opportunities to expand CST’s reach and impact.
Shane Thorne
Commercial Director
Shane joined CST in 2006 and started out in consultancy, working with our customers to develop their infrastructures and technical budgets. Due to Shane's practical knowledge, he can explain technical terms in easy-to-understand terminology. His unique experience of ‘both sides of the fence’ has allowed him to develop and grow the way CST develops and recommends the right solutions for our customers. Shane ensures our customers are happy with the services they are provided through excellent problem management skills and ensuring regular contact with our customers.
Ayrton Mitchell
Professional Services Director
Ayrton joined CST in 2014 and has steadily advanced through a range of technical and leadership positions, gaining a comprehensive understanding of both the company and its clients. His passion for technology and commitment to client success have made him a key architect of CST’s professional services evolution. Today, Ayrton leads the team responsible for delivering high-impact solutions, working closely with clients to understand their challenges and designing services that meet real-world needs with precision and creativity.
Ryan Griffin
Technical Operations Director
Ryan joined CST in 2014 and has grown with the business through a variety of roles—from procurement and the service desk, to consultancy and leadership. His deep understanding of both technical delivery and client needs led him to head up our Solutions team before stepping into his current role as Technical Operations Director. Ryan now oversees the end-to-end performance of our service operations, combining hands-on experience with strategic oversight to drive efficiency, innovation, and service excellence.
Ronan McManus
Finance Manager
Ronan joined CST in 2016 and has been a key figure in strengthening the company’s financial operations. With a sharp eye for detail and a strong grasp of business dynamics, he has introduced processes and controls that have improved financial transparency and operational efficiency. As Finance Manager, Ronan oversees budgeting, forecasting, and financial reporting, providing the insight and guidance needed to support strategic decision-making and sustainable growth across the business.
We’ve been working with CST since 2009, a long relationship by any standards. They have provided us with consistent good service and excellent remote access to resolve issues. We rely on them to ensure we are always on top of IT security issues – extremely important for us and our clients. Staff are helpful and responsive and will deal with even the smallest of queries. Recommended!
Sarah Lythgoe
Practice Manager - Challenge Consulting Ltd.
CST have been nothing but outstanding. The pace of digital progress we have made in the last two years has been down to CST. With their new structure in place, we can consult with our CST Success Manager on strategy, build and develop our digital infrastructure with their on-site engineers and troubleshoot issues quickly and effectively with their remote team. CST listen to our requirements and know that what we need is unique to everywhere else.
James Jerrold
Head of Digital Strategy & Computing - Wellesley Prep School
CST has been providing us with outstanding service since 2016. Their teams are always responsive, addressing our IT support issues promptly and minimising downtime. Their proactive approach to system maintenance and security has significantly enhanced our operational efficiency. We would recommend CST to any organisations looking for subject matter expertise and reliable and professional support.
Francesco Deluca
Regional Director EMEA - Omega World Travel
CST has been supporting Yours Clothing for 10 years and has played a key role in ensuring our IT operations run smoothly across our head office and all our stores, providing both onsite and remote support to meet our business needs. Initially CST completed a full nationwide roll out of new Meraki firewalls, access points, including SD WAN setup for every existing store, at the time this was around 90 stores. This was completed over several weeks, with multiple engineers each day visiting several locations to complete the upgrades. Since then, we have acquired several other brands, stores, and warehouses to expand our operations. We now have around 160 stores nationwide and with each new store opening, CST has provided invaluable support.
David Lane
Yours Clothing
We are very grateful to CST for their highly capable support and advice over the last few years. They do a great job of managing and maintaining our servers on a long-term contract. However, they have also been impressively flexible and responsive when we have needed projects completed or problems solved, even at very short notice. First class service – thank you!
Edward Walter
Dr Challoners High School
Supporting businesses nationwide
With nationwide coverage, CST provides expert remote support to businesses across the UK, and our team is always ready for onsite visits whenever you need us.
Free Comprehensive Site Audit
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