Family as a theme has come almost to define the reign of Queen Elizabeth II. Whether her own family, of the 'family of nations' that is the Commonwealth, the Queen is known to highly value the shared strength which can be derived from family life. However, what is her own experience of family - and how has it helped sustain her during her long years as Sovereign. Features exclusive, recently conducted interviews with Ingrid Seward, Countess Mountbatten of Burma, Penny Junor, Sir Roy Strong, Romilly Weeks, Dickie Arbiter and Andrew Pierce.