Relatively few single deckers were purchased in the 1940s and 1950s. There were Leyland Tigers and Guy Arab IIIs in the late 1940s/early 1950s, followed by some Guy Arab UFs. The first Leyland Leopards first arrived in 1961, but a milestone was the delivery of the first batch of Leopard PSU3 models in 1964. With 53 seats, a standee Leopard had almost as many seats as an early-postwar double decker, and they quickly became the standard Central SMT bus. By 1983 some 400 Leopards had been purchased new, as well as a number of secondhand examples from within the SBG. After the Leopards, Central standardised on the Leyland Tiger, with 83 buses delivered between 1982 and 1987. There were also 45 Leyland Nationals in 1978-81 and 15 Dennis Dorchesters in 1983-84. Additional Leyland Nationals and some Seddon Pennine 7s were inherited with Airdrie depot.