This 1977 Eurovision Song Contest took place at the Wembley Conference Centre in London. The event was postponed for five weeks because of the fact that the cameramen and technicians were on strike. The song contest was supposed to take place on the 2nd of April, but it did not take place until 7th May. 18 countries took part this year. Sweden returned, and Yugoslavia withdrew from the contest. Tunisia was supposed to participate as well, performing in 4th position, but the country later withdrew its entry.