ON August 27, 1979, an IRA bomb detonated on board a small fishing boat off the north west coast of Ireland, killing Lord Louis Mountbatten, who lived at the Broadlands estate.

Marking the anniversary, the BBC documentary, which aired on Monday, retold the events of that day which also included the ambush of a convoy of British soldiers at Narrow Water Castle near Warrenpoint in County Down, Northern Ireland. Eighteen soldiers and one civilian were killed in the ambush - the biggest loss of military life in a single day during the 30 years of the Troubles.

The Day Mountbatten Died, which is still available to view at www.bbc.co.uk/iplayer, features interviews with Lord Mountbatten’s granddaughter India Hicks, among others, who was holidaying with her grandfather and family at Classiebawn Castle at Mullaghmore, County Sligo, that summer.