Offshore radio in England in the 1960s as well as the fact the major labels had left little to no airtime to less established acts. The Radio Caroline name was used to broadcast from international waters, using five different ships of three different owners, from 1964 to 1990. Radio Caroline was the brainchild of Ronan O'Rahilly, who dreamed up a way to air music by "unestablished" rock and roll artists Other well-known stations of the period were Radio Atlanta, Radio London, Radio 270 (broadcasting of the coast of Filey, Yorkshire) Radio 390, Radio Scotland, Radio Northsea International and Radio City. Most offshore
Pirate radio in the United Kingdom radio stations were broadcasting to an estimated daily audience of 10 to 15 million. Influential pirate radio DJs included John Peel, Tony Blackburn, Kenny Everett, Johnnie Walker, Tony Prince, Emperor Rosko and Spangles Muldoon. The format of this wave of pirate radio was influenced by Radio Luxembourg and American radio stations. Many followed a top 40 format with casual DJs, making UK pirate radio the antithesis of BBC radio at the time. Spurred on by the offshore stations, landbased pirate stations took to the air on medium wave at weekends, such as Radio Free London in 1968. By 1965 pirate