DBY 467 was a 1975 Bedford YRQ carrying a Marshall B46F body. It was new to the Atomic Weapons Research Establishment (AWRE), Aldermaston, and was registered HGM 613N. It also carried the Maltese registration Y-0467.
DBY 453, new as FNL 581L, was a 1973 Bedford YRQ with Plaxton Elite DP45F body, new to Moor-Dale, Newcastle upon Tyne. It previously carried the Maltese registration of Y-0453.
DBY 400 was a 1973 Bedford YRQ with Plaxton Elite DP45F body. New to Walker,
Brompton, North Yorkshire, registered CPY 580L. Previous registration carried was Y-0400.