b'HistoryELIZABETH Elizabeth II is the longest serving monarch in British history. DuringDuration: 8 x 60 her reign, she has experiencedProducer: ITN Productionstriumphs and tragedies, and been forced to choose betweenYear of production: 2018supporting her family and doing her duty as monarch. We interview Prime Ministers, Royal Household members and closest friends, to build a uniquely personal picture of The Queen.45'