The company warned that these commercial units, primarily based in the US, which also provide systems to buses and other means of transport, would all be impacted by weaker demand in the near-term.
At its shipyards and factories across Britain, 90% of employees were now back working, whether that was from home or on site, and its US facilities were also operating.
Productivity levels were affected during the pandemic as the company brought in protective safety measures and as a result of supply chain challenges.