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As the longest reigning British monarch, the Queen saw a huge number of significant historical events

Elizabeth II got on well with PMs of widely differing politics and backgrounds and played a key role in the background of British politics

The Queen held weekly meetings with the prime minister of the time throughout her long reign.

From Winston Churchill to Liz Truss, the Queen held weekly audiences with the nation's political leaders over 70 years to discuss their plans and offer wise counsel on the issues of the day

From Winston Churchill to Liz Truss, Queen Elizabeth ll worked with 15 British prime ministers in her 70-year reign. Here are some key moments that give insight into their relationships with the Queen.

She has ruled for 70 years

He’s clearly not in the Churchill or Thatcher first class, and his personal flaws and precipitate fall from power means he’s demoted below the likes of Blair and Wilson in the second division. However, Brexit and his election success put him above May and Cameron, writes Sean O’Grady

In today’s Diary: New memoir from Boris’s ex? / Sir Lenny on Luther / Rap blunder from new deputy PM / Starmer’s night off / Dinner with Kate Moss

Her first Prime Minister was Sir Winston Churchill and her most recent will be Liz Truss, the 15th figure she has welcomed to the role