The Spencer Davis Group

Legendary 1960s band formed in Birmingham in 1963, which had two UK #1 hits and one UK #2 hit in 1965 and 1966. Steve Winwood left in 1967 to form Traffic. After releasing a few more singles the band ceased to be active in 1968.
Davis refounded the group on two more occasions - without the involvement of the Winwood brothers - first in 1973–1974 for two more albums and again from 2006, since when they have primarily been a touring act.