Glowworm was allocated to a G-class destroyer under construction at the William Denny shipyard at Dumbarton in 1945. The vessel was originally called HMS Guinevere but was renamed in September 1945 to HMS Glowworm, and renamed again in October to HMS Gift. Construction was cancelled on 1 December 1945 before completion.
Glowworm was allocated in October 1945 to a similar G-class destroyer under construction by John I. Thornycroft & Company Limited, and originally called HMS Gift. Construction was cancelled on 12 December 1945 before completion.