SDO class

The SDO class consists of 89 Scania N230UD open-top double-decker buses (except SDO1–SDO39, which are N270UDs) with East Lancs OmniDekka bodywork, numbered SDO1–SDO89.

SDO1–SDO5 were constructed by Scania/East Lancs, SDO6–SDO20 by Scania/Darwen, and SDO21–SDO89 by Scania/Optare.

SDO class vehicles are currently operated by Localbus North West at Blackpool; Localbus Scotland at Seafield; Localbus South East at Isle of Wight; and Localbus Yorkshire at York.

All 89 SDO class members were previously classified as the now-extinct SDN class prior to being converted into open-top buses.