Facts based on the London 1948 Olympic Games: many countries, including Burma, Ceylon, Lebanon, Puerto Rico, Syria and Venezuela, were represented for the first time. On the other hand, there were no athletes from Japan, Germany or the USSR.
Blocks to facilitate athletes' starts appeared in sprint races (100m to 400m).
The Empire Pool was the first covered Olympic pool in history. Located not far from Wembley, it could house 8,000 spectators. As its length exceeded the regulatory 50m for an Olympic pool, a wooden platform was constructed to shorten it and to house the judges and officials.