Kool FM was a London pirate radio station that also broadcasts as an internet radio station, started on 28 November 1991.
It was one of the first pirate stations ever to play Hardcore Jungle. Simon Reynolds called it "London's ruling pirate station" in an account of the beginnings of jungle music in the early to mid 1990s. Similarly, Billboard magazine referred to Kool FM as "leading jungle station" in a 1995 report about the genre. In January 1996, Kool FM Midlands started broadcasting to the Midlands on 105.6 FM, based in Birmingham; by then dedicated to drum'n'bass. In 1998, US magazine Vibe compared it favourably to Kiss FM (a former London pirate radio station which had become legal): "Meanwhile, UK pirates like Kool FM continue to broadcast even better music without interference from authorities. In the same year, Kool FM featured in a BBC documentary about pirate radio.
From August 2010, Kool FM was rebranded and now operates as an internet radio station, Kool London, providing a live audio and video stream of radio shows. Kool London have also launched the Kool Archives, a Mediafire account that is regularly updated with recordings of the live shows and has recordings that span from 1992 to the present day.
The station has won 'Best Radio/Internet Station' at the Drum n Bass Awards numerous times, most recently in 2012. (13th time). In June 2013, Kool London broadcast live for eight hours a day from the Royal Academy of Arts as part of the RA Schools Show, forming part of a graduate's final year project.