Prince William and Kate Middleton
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Royal engagement: William and Kate's Anglesey visit

24 February 2011 Last updated at 18:31 GMT

Prince William and Kate Middleton have been welcomed by crowds of hundreds of people on their first official engagement as a couple.

Miss Middleton cracked open a bottle of champagne over a new RNLI lifeboat at Trearddur Bay on Anglesey.

The prince, who is based at nearby RAF Valley, told the crowd: "I do the talking, she does the fun bit".

Miss Middleton sang the Welsh national anthem, as well as a hymn in Welsh.