The Dennis Dorchester was a mid-engined heavy-duty single deck coach or bus chassis built by Dennis in small numbers between 1983 and 1988. About two thirds of the total number built were bought by Scottish Bus Group subsidiaries Western Scottish, Central Scottish and Clydeside Scottish. These consisted of 23 with Plaxton Paramount coach bodywork, and 21 with Alexander bodywork to each of the three T-type variants (TS service bus, TE express semi-coach and TC full coach).