Sumer is a national accountancy organisation founded in 2019 that brings together regional accounting practices across the UK and Ireland. The firm operates from more than 80 offices, serving over 60,000 small and medium-sized enterprise (SME) clients. It has been recognised as the fastest-growing accountancy firm in the UK and Ireland.
The company's model combines the local identity and expertise of regional practices with the scale, resources, and advanced technology of a large national firm. This structure is designed to serve SMEs that benefit from advisers embedded in their local communities while accessing broader capabilities typically associated with larger organisations.
Sumer operates a shared success model, aiming to champion businesses at the heart of local communities. Its practices maintain their regional presence and client relationships while drawing on national infrastructure and technological investment.
