The final days of the pop piratesGetty ImagesThe Marine Broadcasting Offences Act saw the closure of Radio London, which on 14 August 1967 arrived at the Port of Felixstowe in Suffolk. The DJs, Mike Lennox, Pete Drummond, John Peel, Michel Philistin, Willy Walker, Paul Kay, Chuck Blair, Mark Roman and Tony Brandon, were greeted by fans of the station.Radio LondonRadio London had been broadcasting three and a half miles off Frinton-on-Sea, Essex, since December 1964.Getty ImagesRadio Caroline was founded in 1964 to play pop music all day, at a time when broadcasting was dominated by the BBC and pop was played for an hour a week. Disc jockeys Johnnie Walker (left) and Robbie Dale were DJs for the station, which continued to broadcast after the act passed.Getty ImagesRadio Caroline's pirate radio ship 'MV Mi Amigo' ran aground at Frinton-on-Sea during a storm on 20 January 1966. The station continued to broadcast intermittently, in various incarnations, until the Ross Revenge ran aground off the Kent coast in 1991.Getty ImagesThe Radio Caroline DJs, including David Lee Travis and Tony Blackburn, were photographed at Walton police station in Essex after their ship ran aground in 1966.Keith Skues, who worked for both Radio London and Radio Caroline before joining the BBC, said: "Radio London was twice the size of Caroline. It was also the first to broadcast jingles. We never had them before, now everyone has them." He said Radio London had the Fab Forty list, "which was two to three weeks ahead of the national charts."Getty ImagesFans angry about the station's closure met Radio London DJs - including 'Marshall' Mike Lennox (centre) - off the Harwich train at London's Liverpool Street Station in 1967, where there were said to be scuffles with police.Getty ImagesSkues, who had left the radio station about two weeks previously, went to meet his colleagues at the station. "There were thousands of fans. It was mob hysteria," he said.Many of the former pirates, including Skues, Peel and Blackburn, went on to DJ at BBC Radio 1 and 2, which started broadcasting the same year the Marine Broadcasting Offences Act was passed. "The BBC auditioned 100 DJs and 12 of us were selected. Tony Blackburn opened the station and I was the second DJ presenting Saturday Club," Skues said.Radio Caroline awarded broadcast licenceRadio Caroline seeks Ofcom licence