The London 2012 Olympic Games begin on Friday. But the UK's capital has been here before: 62 years ago. It hosted the 1948 Olympic Games, dubbed the 'Austerity Games' because they came so soon after World War II.

See how the infrastructure behind the international sporting event has changed in six decades, in this comparison of the 1948 Games to London 2012.

Above is Wembley Stadium — a scoreboard in particular. In 1948, 82,000 people filled this now-demolished venue for the start of the Summer Olympics.