Scotland Yard has confirmed it is investigating reports of a stolen Olympic medal and blazer from an event in Mayfair.
However the force has not yet been contacted about a second stolen Olympic medal.
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The Duke and Duchess of Cambridge met young people who have battled mental health issues on Saturday.
Former Chancellor Lord Geoffrey Howe was Margaret Thatcher's longest-serving Cabinet minister, also taking on the role of Foreign Secretary.
Lord Geoffrey Howe is known by many for his resignation speech which was seen as the catalyst which destroyed Margaret Thatcher.