Class 405 provides for the combination of molding and earthworking or treating means. Earth Boring, Well Treating, and Oil Field Chemistry, subclasses 100 + for earth boring and well treating compositions.

Under TOPS all surviving units were allocated to Class 405, but divided into two sub-classes. Sub-class 405/1 included the former Southern Railway sets numbered between 4112 and 4387, and sub-class 405/2 included the former British Railways sets built after 1949 and numbered between 4601 and 4754.

Class 405 is generic with respect to Class 166 regarding earth treatment and handling, i.e., Class 166 takes earth treating and handling methods and apparatus peculiar to wells and the formation thereof.

Class 405 provides for appara-tus and methods for containing the spread of a floatable material in a canal or body of water, and for structures which effect the setting of suspended matter in a canal or body of water by retarding the flow and allowing the material to settle by gravity.

The 4-Subs were classified as Class 405 under TOPS, but their unit numbers always remained under their original SR designation in the 4xxx series and were never renumbered into the 5xxx series to conform to TOPS. Click on the thumbnails for a larger image.

Throughout its working life it was just another unit in the fleet but that changed in 1982 when British Rail recognised the sterling service and iconic status of the units as part of the fabric of suburban life when they retained one complete set and stopped it from going the way of the rest of the class to the breakers yard.

The Bullied designed 4 SUB (4 Car SUB urban) units were introduced from 1944. The BR TOPS classification was Class 405. A kit of this EMU have been produced by Blacksmith Models, now Cooper-Craft. MTK, No Nonsense Kits, Phoenix-Precision …

Quick Facts Southern Railway 4-SUB British Rail Class 405, In service ... This short article about transport can be made longer. You can help Wikipedia by adding to it. The Southern Railway (SR) gave the designation Sub to the wide variety of electric multiple units that were used on inner-suburban workings in the South London ...

S.R. Class 4-SUB (later Class 405) Bulleid 750 v dc 3rd rail inner suburban 4-car e.m.u. built by S.R.& B.R. (Eastleigh) 1941-48 (Class 405/1) and by & B.R. (Eastleigh) 1949-51 (Class 405/2).

By September 1941, a complete four-vehicle set was available for service, comprising 456 seats, 60 of them First Class. The formation was equipped with four English Electric motors, each generating 275 HP, and these were split between the two driving vehicles.