Adrian Fisher (RIP) - one of Britain's best rock guitarists ever, he was the cousin of Eric Clapton and actually taught him how to play some guitar licks. The album "Reptile" was dedicated to him by Clapton. Fisher had previously played in Brush Sheild's band which also had Gary Moore, and later played in Sparks and Boxer in the mid 70's before being put into rock'n'roll exile in Thailand where he died in 2000.
Alan Parker - a session guitarist who has played in the bands Blue Mink, Alan Parker Sound, and big band rock outfit CCS (Creative Consciousness Society) with Alexis Korner. He wrote a couple of TV themes that I liked such as The Adventures of Sir Prancelot, Angels (a soapie about nursing students), as well as playing the legendary guitar riff for a cover of Led Zeppelin's "Whole Lotta Love" that was used on Top Of The Pops in the UK during the 70's.
Bill Oddie - the clip on YouTube where he's learning to play guitar riffs as coached by Mark Knopfler is hilarious!
Jeff Healy - great playing style, and a great rock voice. How he does all those acrobatics with his guitar and yet he is blind is beyond me.