In recognition of the contribution of the 2000+ members and former members of The Society for Radiological Protection (SRP) have made to the public benefit by their professional activities, as well as their work for SRP, the SRP Benevolent Fund was proposed in 2011, to provide financial support in times of need. The fund (which is a separate legal entity to SRP) has been established as a Charitable Incorporated Organisation, under the provisions of the Charities Act 2011. This document describes the Constitution of that fund.