The latest phase of the upgrade to Rolls-Royce's Raynesway factory in Derby will officially open later today.
The firm secured a £1 billion contract from the Ministry of Defence in June to build reactors for the next generation of nuclear submarines.
Atlantic House will be officially opened by HRH the Duke of Kent.
More top news
Air testing is being carried out at a primary school after a mystery strong smell forced it to be evacuated when 20 children fell ill.
Paul Haxby takes us on a trip over the Derbyshire Peak District whose valleys were shrouded in fog late last week.
A nurse has described the moment medical staff were told not to resuscitate a little boy, after a doctor made a "mistake".