Ordinarily we wouldn't give two hoots, but he seemed like a laugh last week so consider us interested. We'll even forgive the fact that he reportedly didn't know what the Paddy's Day Parade is... In this brand new documentary, Alan Titchmarsh talks to HRH The Duke of Edinburgh as he approaches his 90th birthday. Philip, the longest-serving royal consort in British history, talks candidly about his life, and archive clips give an illuminating insight into the story of the young Greek prince who captured the heart of the world's most eligible princess, who later became the Queen. Alan also talks to HRH The Princess Royal about her father and memories of family life.