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Mark O’Sullivan

Assistant Manager

Biography

Mark joined the Ensors Saxmundham office in 2025 and is an Assistant Manager in the Payroll team. Prior to joining Ensors, he achieved his AAT qualification in 2015 and held several roles in both the leisure and logistics sectors before transferring into practice.

His experience includes being appointed to the role of Payroll Subject Matter Expert at Greene King, where he designed and tested the implementation of a new HR and Payroll system. Prior to this, Mark led the payroll advisory team who supported the enquiries of its 44,000 employees, ensuring that they were paid efficiently and on time.

Experienced in supporting a variety of limited companies and large corporate entities, Mark uses his industry knowledge to provide a detail-orientated, friendly and proactive approach to each and every client; specialising in the Leisure and Tourism, Manufacturing, Construction, and Transport sectors to deliver a smooth payroll process that meets operational and legislative demands.