In this first instalment , we take a look at how Roger Bannister 's sub-four - minute mile in 1954 pushed the boundaries of athletics .
How two witnesses to the feat went on to play a fundamental role in the inception of Guinness World Records .
In this first instalment , we take a look at how Roger Bannister 's sub-four - minute mile in 1954 pushed the boundaries of athletics , and how two witnesses to the feat went on to play a fundamental role in the inception of Guinness World Records .