How long did the Royal Navy retain government dockyards?

Did the Royal Navy still operate government-run dockyards in the 1930s?

Yes; government-owned dockyard capacity remained a central Royal Navy institution for decades, with major privatization occurring only in the late 1980s and early 1990s.

Royal Navy dockyards remained government-run throughout the 1930s and well beyond the Second World War. The service retained fully government-owned dockyard facilities for decades. Major privatization began in 1987, while Rosyth and Portsmouth followed in 1993 and Plymouth had already ceased shipbuilding in 1971. The different dates show that closure, mixed ownership, and privatization did not follow one uniform timetable.