[1][2] The largest British customer of the Dennis Dominator was South Yorkshire PTE, with a total of 318 buses being delivered to the company.

Most of the SYPTE vehicles received Alexander RH bodywork, these being delivered from 1981 to 1987, though some were bodied by East Lancs and Northern Counties.

[3] The SYPTE Dominators were delivered in phases to replace Daimler Fleetlines, Leyland Atlanteans, Volvo Ailsa B55s, some of which dated to the early 1970s.

The final batch of Dominators delivered to Sheffield included 20 vehicles fitted with coach seats and were allocated to regionwide express services with distinctive Fastline branding.

The high standard of engineering led to the last Dominators in South Yorkshire remaining in service in Doncaster until July 2006.

He felt that the side-facing bench seats over the front wheel arches, with their deep footstools, gave a rather tunnel-like aspect, and offered his ideas on a tidier layout, but praised the principle of using the same chassis for double and single-deck applications.

The next customer was the borough of Hartlepool, a neighbouring fleet and another that was all single-deck, they chose East Lancashire Coachbuilders to body their six.

Hartlepool had never operated Fleetlines of any sort, and had reluctantly switched from Leyland-engined Bristol REs with dual-door Eastern Coach Works bodies to Leyland Nationals before these buses, their first since the 1950s with Gardner engines.

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 and Wear PTE, United Automobile Services, Northern General Transport Company, Trimdon Motor Services, Cleveland Transit, Darlington and Hartlepool these included Barrow in Furness Borough Transport.

It was liveried in fire-engine red, the grille was an unadorned mesh affair in an otherwise flat front, featuring a divided flat-glazed windscreen.

The final customer for the single-deck Dominator were a fleet who had Fleetlines, but only double-deckers, this was Swindon based Thamesdown Transport.

A proportion of the fleet had to be single-deck because of railway bridges (like Darlington, Swindon was a town built on railways) and prior to 1980 the single deckers were five Weymann-bodied AEC Reliances, three Leyland Leopard PSU4 with Pennine Coachcraft bodies and five late-model coach-seated Eastern Coach Works Bodied Bristol RESL6G.

Thamesdown's numbers 1-4 (FAM1-4W) were the only short-wheelbase single-deck Dominators, type SD132B, they had 40 coach seats in 10-metre single-door Marshall Camair 80 bodies.

[19] In 1982, a tri-axle version was developed for the Hong Kong market, known as the Dennis Dragon which was sold to Kowloon Motor Bus.

In 1984, Dennis introduced a midibus chassis which was a scaled down Dominator, it could be fitted with Perkins T6.354 and Avon Maxwell transmission.