[1] In the event, they were also intended to supplement this class while members entered the works for rebuilding into "Radial Tank" configuration.

[1] All were built from 1882, and were also intended for medium to heavy suburban passenger traffic around the South Coast on the LSWR railway network.

The device was originally invented in 1863 by William Bridges Adams (no relation)[4] and could be applied to a leading or trailing axle but was generally preferred for the latter.

[2] Although all were constructed to the same basic design, the locomotives that were outshopped from 1884 had slightly larger side water tanks and deeper fireboxes, therefore increasing efficiency.

[3] In order to facilitate the speedy overhaul of these locomotives in the confined spaces of Nine Elms, spare boilers were constructed.

Coupled to a short wheelbase and guiding bogies, the locomotive was relatively manoeuvrable on tight curves, a feature that was to ensure the survival of some of the class later on.

[2] Upon the appointment of Dugald Drummond as Superintendent of the LSWR after Adams' departure, the class was modified slightly, with the application of his lipped chimney in place of the stovepipe version that the locomotives were equipped with when built.

[2] As a result, two were allocated to Exmouth Junction shed for the Axminster to Lyme Regis service, joined in 1946 by a third example retrieved from the East Kent Railway.

The class also saw service during World War I, which effectively extended their working lives until the mass withdrawal of 38 engines in 1921.

As a purely passenger engine, the new arrival was little suited to the East Kent Light Railway's primarily industrial needs; it was only used when absolutely necessary, and then largely on coal trains, taking 14 wagons on the Tilmanstone shuttle.

The continued electrification and subsequent intensification of timetables meant that the remaining two members of the class still in service, numbers 0125 and 0520, were retired in 1929.

These three locomotives continued on the Lyme Regis branch after Nationalisation due to the lack of better motive power to cope with the curve restrictions in place on the line.

Steam on the branch was however short lived after the demise of the 0415 class, and the Ivatt tanks were soon replaced by diesel railcars.

At present, it is displayed as a static exhibit, as extensive overhaul (probably involving replacement of the boiler barrel) is required before it can steam again.