Complex sentence: Hyden House Limited, 1993 The Alma Mater of the RN Communications Branch, HMS Mercury subsequently housed both the Communications and Navigations faculties of the Royal Navy's School of Maritime Operations (SMOPS) as well as the Special Communications Unit (SCU), Leydene.
Split into simpler sentences: Hyden House Limited, 1993 The base went on to house both the Communications and Navigations faculties of the Royal Navy's School of Maritime Operations (SMOPS). At the time of its closure, HMS "Mercury" was home to the Communications and Navigations Faculties of the Royal Navy's School of Maritime Operations and the Special Communications Unit (SCU), Leydene.