Chris Mercer:

A saxophonist who was as common on this era's British blues and r&b albums as Kaz Kazanoff is on today's (1999) blues albums out of Texas.

Just to mention a few of his clients:
John Mayall, The Misunderstood, Juicy Lucy, Keef Hartley, Frankie Miller...
Get the idea? Open "The New Rock Record" volume and he is all over the place!

The Musicians' Olympus: excellent page on the career of Chris Mercer!