More than 800 people are employed at the 200-acre Rolls-Royce site at Ansty, near Coventry.
The factory handles the refit and repair of their aeroplane and marine engines. The company's Trent series of civil aviation engines components are also manufactured on the site.
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Any early mist and fog will soon clear. Plenty of warm sunshine will develop.
Dry and often sunny once any morning mist and low cloud clears. Warm inland, but cooler along coasts.