Queen Elizabeth II and the US presidents: British royal will soon have met all but one Potus during her reign

The long-serving monarch will have met 13 of the 14 presidents that have held office during her reign when she greets Joe Biden this month

Princess Elizabeth and Prince Philip look on as President Harry Truman gives a speech in Washington, DC, in November 1951. Getty Images

President Dwight Eisenhower, centre, with Prince Philip, Princess Anne, Queen Elizabeth II, Prince Charles and Captain John Eisenhower at Balmoral Castle, Scotland, in September 1959. Getty Images

Prince Philip, Jacqueline Kennedy, Queen Elizabeth II and President John F Kennedy in the drawing room at London's Buckingham Palace in June, 1961. Getty Images

Queen Elizabeth II with President Richard Nixon at Buckingham Palace in February 1969. Getty Images

President Richard Nixon and British Prime Minister Edward Heath meet Queen Elizabeth II for lunch at Chequers in October 1970. Getty Images

Queen Elizabeth II makes a speech, next to President Gerald Ford, at the White House in Washington, DC, in July 1976. AFP

President Jimmy Carter with Queen Elizabeth II and Prince Philip at Buckingham Palace in May 1977. Getty Images

Queen Elizabeth II and President Ronald Reagan commemorate the 40th anniversary of D-Day in Normandy, France, in June 1984. Getty Images

President Ronald Reagan and Queen Elizabeth II at a gala dinner at Windsor Castle in June 1982. Getty Images

Prince Philip, Queen Elizabeth II, President George Bush and First Lady Barbara Bush attend a dinner at the British Embassy in May 1991. AFP

First Lady Hillary Rodham Clinton, President Bill Clinton and Chelsea Clinton meet Queen Elizabeth II at Buckingham Palace in December 2000. AFP

President George W Bush, Queen Elizabeth II, First Lady Laura Bush and Prince Philip at Buckingham Palace in November 2003. Getty Images

Queen Margrethe of Denmark, Prince Philip, Queen Elizabeth II, French President Jacques Chirac, Bernadette Chirac, President George W Bush, First Lady Laura Bush and Russian President Vladimir Putin attend a commemoration ceremony on the 60th anniversary of D-Day in Arromanches, France, in June 2004. Getty Images

President Barack Obama and First Lady Michelle Obama meet Queen Elizabeth II at Buckingham Palace in April 2009. Getty Images

President Barack Obama and Queen Elizabeth II attend a state banquet at Buckingham Palace in May 2011. Getty Images

President Barack Obama and First Lady Michelle Obama are greeted by Queen Elizabeth II and Prince Philip after landing by helicopter at Windsor Castle in April 2016. Getty Images

President Donald Trump and First Lady Melania Trump with Queen Elizabeth II at Windsor Castle in July 2018. Getty Images

President Donald Trump and Queen Elizabeth II attend a state banquet at Buckingham Palace in June 2019. Getty Images

President Donald Trump, First Lady Melania Trump and Queen Elizabeth II attend D-Day Commemorations in June 2019 in Portsmouth, England. Getty Images

With a reign spanning almost 70 years, Queen Elizabeth II has seen plenty of changes during her time on the British throne.

While she may be the world's longest-reigning monarch, the US President doesn't spend anywhere quite as long in the Oval Office as the royal has in Buckingham Palace.

During Queen Elizabeth II's sovereignty, 14 men have held the title of President of the United States. The royal has met 12 presidents since taking the throne, with that number set to rise to 13 later this month.

The queen is scheduled to meet US President Joe Biden, who took office in January, when he visits the UK for the G7 summit on Sunday, June 13.

Scroll through the gallery above to see photos of Queen Elizabeth II with 12 US presidents.

The monarch, 95, will also meet Jill Biden, the first lady, at Windsor Castle, marking her first meeting in person with a foreign head of state since the pandemic hit.

The only US president the queen did not meet was Lyndon B Johnson, who served between 1963 and 1969.

She was unable to meet Johnson, who took over from the assassinated John F Kennedy, at the late politician's US funeral, as she was pregnant with Prince Edward.

During his presidency, Johnson and the queen are believed to have communicated many times, according to the LBJ Presidential Library, but did not meet in person.

"Queen Elizabeth never sent an invitation to President Johnson to visit Great Britain. And, President Johnson never sent an invitation to the Queen to visit the United States," archivists from the library state.

However, Queen Elizabeth II's sister, Princess Margaret, attended a White House dinner with Johnson during her US tour in 1965.