If you are considering setting up a Direct Debit, you will need a Service User Number or SUN. This is a unique six-digit number given to Direct Debit merchants, enabling them to be easily identified from other Direct Debit facilitators. Businesses can either be allocated their own Service User Number from a sponsored bank, or submit payments indirectly via a Bacs Approved Bureau such as Interbacs. For companies that have been unsuccessful in obtaining an SUN, our Facilities Management service is the perfect solution for start-ups and small to medium-sized enterprises (SMEs) that don’t have a Bacs Service User Number.