[1] The extra weight of the larger boilers was borne by the leading wheels, making the locomotives unstable, particularly at speed.

3021 Wigmore Castle, hauling an express train, was derailed in Box Tunnel when the front axle broke.

The cause of the accident was thought to be excessive weight being carried on the front axle, so it was decided to replace the leading pair of wheels in the 3001 class with a bogie.

The centre pin of the bogie rotated in a spring-centred block mounted beneath the steam chest on cross beams.

This setup gave sufficient clearance so that, when the bolts were undone, the front end of the locomotive raised, and the bogie was run out from underneath, the steam chest cover could be removed without hindrance.

This scheme was not carried through because the connecting rods would not clear the lower slide bar, and the valve gear would be out of alignment.

An alternative proposal to drop the locomotive 3.5 in (89 mm), and raise the buffer beam and dragbox, was also rejected on the grounds of cost.

[10][11] 3065 Duke of Connaught made a record-breaking run with the Ocean Mail on 9 May 1904 (having taken over the train from City of Truro at Bristol), covering the distance from Bristol (Pylle Hill) to Paddington in 99 minutes 46 seconds[12] as part of a run from Plymouth to Paddington in 227 minutes.

Number 3046 Lord of the Isles has enjoyed a certain amount of celebrity, having been chosen as the prototype for a Tri-ang model locomotive.

In 2006, Hornby also produced a limited edition of the same model, this time bearing the name Lorna Doone.

Some boiler fittings were obtained from the Great Western Society and sandblasted, and the dome and safety valve bonnet were made by Newcastle Metal Spinners.

[13] The engine remains there, but the tender was scrapped to make more space for the shopping centre occupying that station building.