Swinging Radio England

Swinging Radio England ("SRE") was a top 40 offshore commercial station billed as the "World's Most Powerful" that operated from 3 May 1966 to 13 November 1966 from a ship in the North Sea, four and a half miles off Frinton-on-Sea, Essex, England. While the station was dubbed a pirate radio station, its operation took place within the law and its offices were in the West End of London. Its representation was by a company formed earlier in the year to represent in Europe the ABC radio and television stations of the United States.

Both the studio and the 50 kilowatt AM transmitter of Swinging Radio England were in two prefabricated rooms lowered into holds of the MV Olga Patricia (later renamed MV Laissez Faire), a World War II vessel built in the US as a supply ship. The station shared the studio and transmitter holds with a 50 kW AM sister station named Britain Radio billed as the Hallmark of Quality and broadcasting easy listening music.