Zellis is a prominent provider of payroll, HR, and managed services in the UK and Ireland, with a history dating back to 1963. Originally known as NGA Human Resources UK & Ireland, the company rebranded to Zellis in 2019, emphasizing its commitment to technological innovation while leveraging decades of expertise. Zellis serves nearly 1,000 customers, processing payroll for three million individuals each month and managing £26 billion annually.The company offers a range of services, including payroll solutions through its ResourceLink software and the award-winning HCM Cloud platform. Zellis also provides managed services such as outsourced payroll processing, HR administration, and recruitment support. Its integrated HR technology enhances workforce management and employee experience. With a workforce of 2,500 employees and headquarters in Hemel Hempstead, Zellis combines traditional knowledge with modern cloud-based solutions to ensure payroll accuracy and optimize HR processes for large employers across various sectors.