Minitrix produced a total of 6 different UK outline 'Pacific' model locomotives ie those with the 4-6-2 wheel axis arrangement.

Of the Britannia class locos, No 70000 was already manufactured by Minitrix before Hornby started to market the UK range.  The Boadicea was introduced much later, and its more modern design allowed the earlier Britannia model to have a facelift.

The A4 Mallard looked superb in 1980 when it was first introduced to the UK market, and in my opinion still does.  The Nigel Gresley was added to the range a couple of years later.

The A3 Flying Scotsman was produced in 2 liveries and was marketed in 1988 solely by Minitrix after Hornby had ceased to be distributor for Minitrix.

The early Britannia and the much later Mallard were both had a lighter green livery, which was consistent with the livery produced for other steam locos that were manufactured for Hornby Minitrix - Evening Star and the 2-6-0 Ivatt Tender loco.

Laterly the Scotsman, Evening Star, the Ivatt, Britannia, Boadicea and Mallard would become available in the much darker and more realistic Brunswick Green. Flying Scotsman was also produced in a very light 'Apple Green'.

All of these models share the same chassis and wheel/axle mouldings - except for the early Britannia, which was differently geared and had idler wheel bearing holes drilled ina different location, smaller idler gears and drive wheel gears and the crank pin fro the centre drive wheel had a spline fit rather that a square hole. The early Britannia had easily recognisable small disc fron bogie wheels.