The Class 314 fleet was subject to numerous overhauls and upgrades throughout their lifetime, usually for the purpose of extending their operational lives. During the late 2010s, the fleet was withdrawn largely due to its non-compliance with the Reduced Mobility Technical Specification for Interoperability (PRM-TSI) legislation that came into force in January 2020. They were largely replaced by cascaded Class 318s and Class 320s following the introduction of the Class 385s. Most of the Class 314s were promptly scrapped following their retirement, although a single example has been converted into a hydrogen-powered train to function as a demonstrator unit.