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 separate prefabricated rooms lowered into the two holds of the MV Olga Patricia (later renamed MV Laissez Faire), a World War II vessel built in the USA 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 music.
Swinging Radio England was the brainchild of Don Pierson who lived in Eastland, Texas, USA. According to an interview by Dr. Eric Gilder with Don Pierson published by Sibiu University Press in Romania during 2001, Don Pierson got the idea following the success of his earlier venture called Wonderful Radio London.
Like Wonderful Radio London, its jingles were made by PAMS in Dallas, as part of "The Jet Set" series 27 originally made for WABC, New York. Its rapid fire bannerline news at 15 minutes past the hour was borrowed from WFUN in Miami. The on-air staff were known as boss jocks, although the offshore version only slightly resembled the style of KHJ in California which originated the name. (See footnote section below regarding Tommy Vance on KHJ in November 1965 and Radio Caroline South in January 1966.)