The Pharmacists' Defence Association is a not-for-profit membership organisation that supports the needs of individual pharmacists, pharmacy students and pharmacy undergraduates in the United Kingdom. Membership of the PDA includes insurance, union membership and defence association benefits, which all aim to assist and support pharmacists in their working lives. In November 2018, the PDA reported having more than 28,000 members. in the United Kingdom. The National Association of Women Pharmacists became a semi-autonomous network within the association in 2019.