Police are urging anyone with information about the missing bronze medals to contact Westminster CID on 020 7321 7650 or to contact Crimestoppers anonymously on0800 555 111.
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Hot and humid throughout the Bank Holiday Weekend.
The airline has cancelled all flights from Heathrow and Gatwick before 6pm on Saturday.
The Hollywood couple, who have been married for 17 years, said they still have "tremendous love and respect for each other".