Yes, it's all very confusing. I never saw Ronnie's colleague, Pete King, but heard his fruity cockney voice on the radio. I've seen the other one, who calls himself the full PETER King, several times in his career from the 1960s to the present and he has now developed into one hell of an altoist - Britain's secret, you might say, now we no longer have a Tubby Hayes or Victor Feldman to offer. Here's a curiosity: Peter King playing Bird's alto!
My link
Thanks for clarifying.
Except that Peter did occasionally go by "Pete," at least in the states. Unless there is a third guy out there.