HMS Dragon is the fourth of six Type 45 destroyers for the Navy.
- The first, HMS Daring, was commissioned in July 2009
- The fifth, HMS Defender, is to arrive in Portsmouth for the first time this summer
- All six set to be in service by the middle of the decade
More top news
Taken in the White Drawing Room at Windsor Castle, a new photograph marks the couple's 70th wedding anniversary.
The 69-year-old republic veteran told the annual Sinn Fein Ard Fheis it would be his last as leader.
A body has been found in the search for missing teenager Gaia Pope.