The Hollies' - Hollies' Greatest
Hollies' Greatest is the only number one album in the UK by British band the Hollies. It was released shortly before Graham Nash's departure from the Hollies and was intended to include all of their British hit singles with Nash, as well as filling in for the lack of an original LP by the group in 1968. Only 3 of the 14 songs on the album – "Stay", "I Can't Let Go" and "Stop! Stop! Stop!" had previously been released on U.K. albums.
It spent seven weeks at the top of the chart in 1968. In total, it spent 27 weeks in the British LP chart, and is the most successful album by The Hollies.