Addison Group

As a group, Addison is greater than the sum of it’s parts. Teamwork is key to our success and it is no surprise that the vast majority of team members have been with the business, in various roles, for some time. Collectively, we are confident that we can deliver for all of our client needs and support them to achieve their aims and beyond.

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Dean Barker

Construction Director

Part of the team since 2006, Dean initially joined the business as a construction manager and has progressed through the company to head our operations on the Construction side of the business. Whilst also providing HSE support and guidance across all disciplines from the Hillhouse office, Dean takes on the responsibility for achieving excellence in customer service, along with supporting the business on the wider growth strategy.

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Gina Peacock

Operations Manager – North East

Gina joined the business in 2020 and plays a pivotal role in supporting the continued growth and success of both the Northeast region and the wider business. Gina leads the recruitment and employee resourcing strategy, ensuring Addison attracts, retains and develops the talent required to support our clients and business objectives. She works closely with senior leadership teams, providing operational support and strategic workforce planning to meet the evolving needs of the business. Gina is passionate about building strong, long-term relationships and takes pride in delivering exceptional service, helping clients access the specialist expertise they need to successfully deliver their projects. As a strong advocate for the Northeast and the UK process sector, she is committed to driving regional growth, supporting local industry and strengthening Addison’s presence across the region while contributing to the wider success of the business.

Marcus Addison

Chief Executive Officer

Marcus has been a key part of the Addison Group since the Project business was established in 1997 and now leads the Group as CEO. With a strong background in contract and cost management, he brings significant commercial expertise and plays an important role in shaping major client agreements and wider business strategy. Marcus remains closely involved in the day-to-day running of the business and maintains a strong customer-facing presence across the group. He is passionate about fostering a positive culture and strong company ethos, underpinned by high standards, integrity and accountability. Marcus is also a strong advocate for sustainable business practices, ensuring that growth is delivered responsibly while supporting both our people and the long-term needs of our clients. His leadership, experience and values continue to be a driving force behind Addison’s ongoing success.

Cyril Clark

Financial Director

Cyril joined the Addison Group in March 2016 and has been a key member of the senior leadership team ever since. An FCCA-qualified accountant with over a decade of experience in senior financial leadership, he brings a wealth of commercial and strategic expertise to the business.Before joining Addison, Cyril worked as a Client Manager for a large Chartered Accountancy Practice, managing a diverse portfolio of SME clients with turnovers of up to £50 million. This broad experience across multiple industries has given him a strong commercial understanding and the ability to support sustainable business growth.As Finance Director, Cyril oversees the Group’s financial strategy, reporting and governance, ensuring the business maintains strong financial controls while supporting investment, operational performance and long-term growth. Working closely with the leadership team, he provides strategic financial insight that helps drive informed decision-making across the Group.Known for his approachable nature and attention to detail, Cyril plays a vital role in supporting the continued success and development of the Addison Group.

Emma Guthrie

HR & Learning and Development Manager

Emma joined Addison in 2022 as the HR & Learning and Development Coordinator and quickly progressed into the Group Management role, reflecting her commitment to driving positive change across the business. Since joining, Emma has played a key role in enhancing HR processes, procedures and practices, helping to create a more efficient and consistent employee experience. She also led the development of the internal Addison Academy, a structured eLearning platform that supports employee onboarding, mandatory training and ongoing professional development. Alongside overseeing the internal learning platform, she has been instrumental in the development of Addison Academy’s external training provision. With a passion for both HR and learning and development, Emma is dedicated to encouraging a positive workplace culture, supporting employee growth and ensuring people have the tools, knowledge and opportunities to succeed. She is committed to delivering fair, consistent and compliant HR practices that support both employees and the wider business.

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Sophie Addison

ESG and Marketing Director

Sophie has been a valued member of the Addison Group for many years, providing support across marketing, ESG and a range of wider business functions. With a strong creative background spanning education and marketing, she leads initiatives to enhance brand visibility across the group and plays a key role in the ongoing development of the Addison Academy. Sophie also supports wider business development activity, bringing energy, insight and a highly collaborative approach. A passionate advocate for ESG, she helps shape and promote the Group’s responsible and sustainable practices. Known for her positivity and problemsolving mindset, Sophie is committed to championing the team’s capabilities and delivering consistently high standards.