Dozens of people were injured, two of them seriously, when a 6.1 magnitude earthquake hit the city of Napa in the wine-producing region of northern California, the city government said.
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Sir Tom will be joined on the panel by Oscar-winning actress and singer Jennifer Hudson and rock star Gavin Rossdale.
The plans had been in development since 2014, but would help underline Britain as a "global player" following the Brexit result.
The number of calls about children suffering or witnessing emotional abuse or physical violence in the home has surged in recent years.