The Duke of Cambridge and Prince Harry will visit Tedworth House in Tidworth later as they offically open the new Help for Heroes Recovery Centre.
The Princes will meet injured service personnel, veterans and their families.
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Sussex astronaut Tim Peake's space mission will be celebrated with a free exhibition at The Novium Museum in his home city of Chichester.
Emergency rescue teams are currently at the scene in East Sussex searching for another missing person.
Plenty of warm sunshine with the chance of thundery showers later.