The NF.21 later equipped the Fleet Requirements Units at Hal Far, Malta, and St Davids, West Wales. One Sea Hornet F.20, "TT 213", was acquired by the RAAF from the Ministry of Supply in the United Kingdom. The aircraft was used by the Aircraft Research and Development Unit (ARDU), at Laverton, Victoria, Australia from 1948 to 1950. It was mainly used for evaluation and tropical trials. Through 1956 and 1957, the majority of the retired Hornets were scrapped, having deteriorated badly due to the weather during storage.