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.
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Steve McClaren says he's "very disappointed" by Derby County's decision to terminate his contract.
Chance of an isolated light shower affecting Lincolnshire early evening, though most places will stay dry with some late sunshine.
Derby County fans have been tweeting their reaction to the news that Steve McClaren has been sacked from his position as head coach.