1948 1949 1950 1951 1952 1953 1954 1955 1956 1957   Brock and Sellars carry out the first successful internal heart surgery in London Olympic Games are held in London, 12 years and two abandoned games after Hitler's1936 Berlin Nazi propaganda 23,000 die from tuberculosis The comprehensive school, modelled on American high schools, is to be launched in Hillingdon and Potters Bar Princess Elizabeth gives birth to a son, Charles United Nations Assembly adopts a declaration of human rights     Copyright © 1998, NHS