Pop/rock Bands That Featured Both American And English Members
Foreigner (American vocalist Lou Gramm, English guitarist Mick Jones)
Fleetwood Mac
The Monkees
Garbage
King Crimson (Eighties/Nineties edition had Englishmen Robert Fripp and Bill Bruford, plus Americans Tony Levin and Adrian Belew)
Wings
The Travelling Wilburys - Americans - Dylan, Petty, Orbison, and Keltner vs. Brits - Harrison and Lynne
Crosby, Stills, Nash & Young - With the additional bonus of having Canadian member.
The Police (Stewart Copeland is American, while Sting and Andy Summers are English)
America
The Talking Heads
Black Sabbath (in the Ronnie James Dio era)
The Mamas & the Papas (Denny Doherty was from Canada)
The Mamas and Papas strike me as a cheat, so let’s add… the Jimi Hendrix Experience (bassist Noel Redding and drummer Mitch Mitchell were English). Or Journey (pianist Jonathan Cain is English, and original drummer Aynsley Dunbar was Scottish). Or Ritchie Blackmore’s Rainbow (Joe Lynn Turner was American).