25th Anniversary Album is a compilation album by Shirley Bassey. Released in 1978 to mark her 25th year in show business, the album was a double set, comprising 40 tracks. The songs included span just 20 of the 25 years from 1957 to 1976, however, her first professional contract (which is reproduced within the album's inner sleeve) is dated 1953. Bassey had toured extensively throughout 1978 to mark her 25 years. This collection, including her biggest hits and some lesser-known recordings, became one of her biggest in the UK, where it reached No.3 and spent 12 weeks on the album chart.