Back in my record store days, this great Dandelion Records single compilation(John Peel's record label) came in that first introduced me to the music of Medicine Head.
Although their later output treads toward the boogie side of British blues and folk, Medicine Head's early singles, off their debut New Bottles, Old Medicine, are right up the London equivalent to Tin Pan Alley. Bert Jansch, Jackson C. Franke, the softer personality of Peter Green, and John Martyn are all contemporaries. It's ambling, pensive, and warm folk music that all those guys did so well, and that nearly nobody has been able to do since.
Medicine Head - This Love of Old
And here's some of that boogie I was talking about: