Their mushrooming popularity was confirmed when Stupidity (1976) topped the UK Albums Chart.

[5] Along with Rock Follies in 1976, it reached the top spot in the UK without the benefit of a hit single.

A free single, only issued with the first 20,000 copies, included the final two tracks recorded in Aylesbury.

An extended CD version of the album was released in 1991 (CDP795934-2) entitled Stupidity + and sub-titled Dr. Feelgood - Live - 1976–1990.

The additional nine live tracks were all recorded post-1977 in the period after Johnson had left the band.