John McLaughlin is possibly the best rock/jazz guitarist this country has produced.; according to Wiki he gave guitar lessons to Jimmy Page!
Right from the start of his very long career (he is still recording and performing at the age of 79) he inclined more towards jazz than the pop/rock of the era. After releasing his first record in 1969 he then went to the USA where he very quickly found himself playing alongside Miles Davis.
He is best known in this country for his jazz fusion band the Mahavishnu Orchestra which tried to combine jazz, psychedelic rock and classical Indian scales and rhythms. (My own personal favourites are his work alongside Paco de Lucia and Al Di Meola)