William on wedding rehearsal: 'Knees started tapping'
Prince William has spoken of his work as an RAF rescue helicopter pilot, to coincide with his grandmother's visit to his base.
The Queen is visiting RAF Valley, where the prince trained and now flies from with search and rescue colleagues.
The prince admitted his wedding later this month was "a daunting prospect but an exciting one".
He also admitted his knees "started tapping" during the wedding rehearsal.
Daniela Relph reports.