Gilbert and Sullivan of these recordings have been reissued on CD. After the company was revived in 1988, it recorded seven of the operas. After the copyrights on the operas expired, numerous companies around the world released popular audio and video recordings of the operas. In 1966 and again in the 1980s, BBC Radio presented complete cycles of the thirteen extant Gilbert and Sullivan operas, with dialogue. Ad hoc casts of operatic singers conducted by Sir Malcolm Sargent in the 1950s and 60s and Sir Charles Mackerras in the 1990s have made audio sets of several Savoy operas, and in the 1980s Alexander
National Gilbert & Sullivan Opera Company Sullivan companies performed around the world. After 1961 other professional groups began to perform the operas in Britain. In 1994, the International Gilbert and Sullivan Festival was founded by Ian and his son Neil Smith partly to fill the gap left by the closure of D'Oyly Carte, and it has been held every August since then in England. On weeknights, the festival features a competition among amateur companies from all over the world. On weekends, however, the festival offers professional performances given by companies such as the Carl Rosa Opera Company, Opera della Luna, the New York Gilbert and Sullivan