Regular Reserve (United Kingdom)

The Regular Reserve of the British Armed Forces comprises former Regular Service personnel who have a statutory liability to be recalled for service. It exists to supplement the Regular Forces in times of national emergency, war, or other situations requiring additional personnel. The Reserve is governed by legislation, primarily the Reserve Forces Act 1996, which outlines the conditions and circumstances under which reservists can be called out.

Membership of the Regular Reserve is usually automatic upon leaving Regular Service, with individuals typically serving a period of reserve liability related to their previous length of service. The specific length and terms of this liability vary depending on rank, branch of service, and date of discharge. Some former Regulars may also choose to volunteer for a specific type of reserve commitment beyond their automatic liability.

Reservists in the Regular Reserve are subject to recall for permanent service, but typically are not required to attend routine training or exercises unless they choose to volunteer for such activities. When mobilized, Regular Reservists are integrated into Regular units and are expected to perform the same duties as their Regular counterparts. This ensures that the Armed Forces can rapidly augment their capabilities with experienced and trained personnel when necessary. The terms of service, pay, and conditions of Regular Reservists when mobilised are broadly similar to those of Regular personnel.

The Regular Reserve is distinct from other types of reserve forces within the British Armed Forces, such as the Volunteer Reserve (e.g., Army Reserve, Royal Naval Reserve, Royal Auxiliary Air Force), which consists of civilians who volunteer to serve part-time alongside their civilian careers. The Regular Reserve relies on the prior full-time service and training of its members, offering a readily available pool of experienced individuals.