Gillian Costain

Gillian Costain currently serves as Employment Tax Senior Manager at SSP Group plc, providing expert guidance on various UK and international employment tax matters since March 2023. Prior to this role, Gillian worked at Laing O'Rourke for nearly 18 years, starting as Payroll & Benefits Specialist and advancing to Senior Tax Advisor and Senior Reward Advisor, where responsibilities included tax support and management of employee benefits and global mobility. Gillian's earlier experience includes serving as Payroll & Benefits Controller at CCT, overseeing payroll and employee benefit issues, as well as supporting HR functions. Gillian holds a Diploma in Payroll Management from The Chartered Institute of Payroll Professionals (CIPP).