The Transport Secretary Patrick McLoughlin is being 'kept in close contact' with the Civil Aviation Authority about the Dreamliner problems - he is 'monitoring closely'.
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The prince laid a floral wreath at one of a group of metal crosses near Wellington Arch in central London.
The group, which also owns Premier Inn, said on Wednesday that it will pursue a ‘demerger of Costa’.
The showers will become more frequent as the day goes on, giving some heavy downpours in places during the afternoon.