An international search to find the source of a Salmonella outbreak that has so far been linked to three deaths is under way.
Public Health England says all 156 cases it is investigating are linked - and are likely to have come from a single source.
ITV News correspondent Rupert Evelyn reports:
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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.