A number of chief engineers working for operators in the North of England met regularly at the time at gatherings sponsored by the Traffic Commissioner, as well as Tyne & Wear PTE, United Automobile Services, Northern General Transport Company, Trimdon Motor Services, Cleveland Transit, Darlington and Hartlepool these included Barrow in Furness Borough Transport. They also were all-single deck at the time, but contemplating future double deck orders. So their numbers 18 and 19 carried similar bodies to the Hartlepool buses, but with only a front entry/exit door and 46 seats. These two batches shared the same SD115 type code, and chassis numbers for the two batches comprised a single series. Barrow had a batch of five East Lancs bodied single-deck Fleetlines delivered in 1971, which were 50 seaters with seating above the engine, but since those Barrow Borough Transport had switched to the locally-built Leyland National, it was problems with the Leyland 510 engines on these as well as standardisation with prospective double deckers that led to Barrow's purchase of Dominators. Barrow were to order double deckers in 1984, but these turned out to be Leyland Atlanteans.