 These were in turn replaced by longer, BL-class Bristol LHs in 1978.In 1977 Leyland Nationals replaced the last of the SMSs, and ran alongside the BLs until 1985, when Bromley became the domain of Nationals and Titans.In the early 1990s, the Nationals were replaced by Carlyle bodied Dennis Darts and MCW/Optare MetroRider midibuses.