The names 'Class 483' and '1938 Tube Stock' are frequently used interchangeably, including within this group, when referring to the units currently in operation on the Isle of Wight. However, whilst the Class 483 fleet is comprised of former 1938 Stock cars, there are in fact numerous differences that set one apart from the other. The most obvious of these is the formation of the units - A 1938 Tube Stock set was formed into either Three (DM/T/DM) or Four (DM/T/NDM/DM or DM/T/SNDM/DM - These abbreviations are explained at the end of this post) car sets, whilst the Class 483 units have only ever run as two car units (formed of two DMSO), though sometimes multiple units have been coupled to form longer trains - an exceptionally rare practice in recent times due to the drastically reduced size of the operational fleet. Other differences are listed below:
The above information was gleaned from photographs and from a 2008 post by Mark Brinton, who has worked with these units. As can be seen, many of the differences may be found in the Motorman/Driver's cab, but there are plenty to be found in the passenger saloons as well. Despite this, the LTTG is likely to make cosmetic changes to some areas of any unit that we acquire in order to represent a unit in London Transport condition, as is more appropriate for the Epping Ongar Railway.
Glossary of Abbreviations