William and Kate arrive for Royal Variety
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William and Kate arrive for Royal Variety

24 November 2017 Last updated at 20:56 GMT

The Duke and Duchess of Cambridge had been delayed for about an hour because of a security alert at nearby Oxford Circus Tube station.

The traditional pre-show line-up, in which the royals meet performers, had to be cancelled.

Catherine, who is four months pregnant, wore a Jenny Packham dress.