North Korea advised the US State Department of its intention to test a nuclear device prior to today's underground explosion, but did not say when it would conduct the test, department spokeswoman Victoria Nuland told Reuters.
Nuland said the notice came through "usual channels" but declined to say when Washington received the notification.
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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.
The curtain will come down on the show for the final time at the Piccadilly Theatre in March next year, before embarking on a UK tour.