The Scottish Bus Group received the largest delivery of Dennis Dominators in Scotland. However out of 11 operating companies (14 as of 1985), only 3 companies took delivery of these vehicles brand new. Central started the trend with its D1 in 1978 before taking stock between 1981 and 1983 of its main deliveries. Western SMT took delivery 12 Dominators in 1983 and in 1985, these 12 Western machines passed to Clydeside Scottish, which also bought another a further 12 brand new (although these were ordered by Western).

Central's D1 when relatively new, was used in trials competing along with other double deckers in the Scottish Bus Group fleets. These vehicles were used from Midland's Milngavie depot in 1980 on Glasgow cross city routes. A second trial was arranged when the Leyland Olympian chassis was announced. D1 was not compared against in the second trial. Fuel Consumption results were as follows:

In total 75 Dominators were purchased by the Scottish Bus Group - These are listed in the chart below:

The Dominator Chassis Numbers stared at 101, so Central's D1 was the 21st Dominator built. Incidentally Central's last Dominator (D51) was the 500th Dominator chassis, and the last SBG Dominator (Clydeside's 159) was the 750th Dominator Chassis.

A few observations with the above Bus Group List. Central's batch D2-D21 were delivered from Dennis in one order, but bodied by Alexander out of sequence, and likewise were given fleet numbers out of chassis sequence, but in body sequence. D2 also carried the very first Alexander RL body.

Western's first batch of Dominator chassis were delivered to Alexander's before Central's last batch of Dominator Chassis, but Central's Dominator's were built and delivered first!

All were delivered new with a Gardner 6LXB engine coupled to a Voith DIWA 851 gearbox bar the following exceptions:

Central's D2-D6 (TYS255W-TYS259W) had Rolls Royce Eage 220E engines instead of Gardner's
Western's D146-D147 (GSB146Y-GSB147Y) had Maxwell gearboxes instead of Voith's