Alfred Gregory Ridley was an English bassist who was the bassist and a founding member of the rock band Humble Pie and Spooky Tooth.

Performance Rockin' the Fillmore is the 1971 live double-LP/single-CD by the English blues-rock group Humble Pie, recorded at the Fillmore East in New York City on May 28–29, 1971. It reached #21 on the Billboard 200, #32 in Canada, and entered the UK Top 40.