Following the sale of Bicester and Berkeley to the Greek Navy, the sale of Cottesmore and Dulverton to the Lithuanian Navy and the decommissioning of Brecon, a contract to re-engine the remaining eight vessels was signed by BAE Systems in 2008, whereby the existing 30-year old Napier Deltic 9-59K power units were replaced by Caterpillar CAT C32 engines, together with new gearboxes, bow thrusters, propellers and control systems, in a six year refurbishment programme that was completed in 2018.

The capabilities of the remaining eight vessels of the Hunt class have been significantly enhanced by the installation of Sonar Type 2193 and the NAUTIS 3 command system.

[6] In late 2007 Chiddingfold used the Seafox drone, the Royal Navy's mine disposal system, during Exercise Neptune Warrior off Scotland.

The 2021 defence white paper announced that all the Hunt-class vessels would be retired from Royal Navy service in the 2020s and replaced by automated systems.

[8] In 2023, the navy began to take delivery of six REMUS 300 small autonomous underwater vehicles (SAUVs), produced by Huntington Ingalls Industries.