Britain's retained tank-ammunition capacity

Does Britain still manufacture its own tank shells, or has production moved to continental Europe?

The understanding offered is that Britain retains production capacity while buying ammunition made elsewhere, but the factory's exact operating status is uncertain.

Britain apparently pays to retain a factory with the ability to manufacture tank ammunition while buying ammunition manufactured elsewhere. It is unclear whether the entire factory is idle or whether it produces other types of shells while retaining unused capacity for tank rounds. Naval shell production is mentioned as a possibility. The change to the Rheinmetall 120 mm gun had not yet been completed, so most British tanks still used their rifled guns at the time of the discussion.