sentences:  The BBC produced two audio dramas during 1998 and 1999 that feature original cast members and broadcast by Radio 4.Although proposals for live-action and animated remakes have not been realised, "Blake's 7" has been revived with two series of audio dramas, a comedic short film, and a series of fan-made audio plays.Four series of thirteen 50-minute episodes were made, and first broadcast in the United Kingdom between January 1978 and December 1981 by BBC1.