Double Take: Really Amazing

Double take: Meryl Streep as Margaret Thatcher and other actors as world leaders

Left: Meryl Streep as Margaret Thatcher in The Iron Lady. Right: Prime Minister Margaret Thatcher in 1980.

Top: Michelle Yeoh as Aung San Suu Kyi in The Lady. Bottom: Aung San Suu Kyi greets her supporters in Bago after her release from house arrest.

Top: Morgan Freeman as Nelson Mandela in Clint Eastwood's 2009 film Invictus. Bottom: Nelson Mandela raises a clenched fist upon his arrival for his first election rally for the 1994 general elections.

Top: Helen Mirren as Queen Elizabeth II, in Stephen Frears' The Queen. Bottom: The Queen at Buckingham Palace on the eve of Princess Diana's funeral in 1997.

Left: Albert Finney as Sir Winston Churchill in the BBC 2 programme Churchill: The Gathering Storm. Right: Winston Churchill pins a flag into his lapel after he had bought one in aid of Red Cross Day in London in 1941.

Left: Frank Langella as Richard M Nixon in Frost/Nixon. Right: Richard Nixon being interviewed by David Frost in Monarch Bay, California, in April 1977.

Left: Josh Brolin as George W Bush in the film W. Right: US President Geoge W Bush celebrates his 55th birthday with a golf game at Cape Arundel Golf Club in Kennebunkport, Maine, in 2001