This is the second use of the J-code for wagons. Previous to 1989, bogie PO vehicles would have been given a TOPS code starting with P, which at that time stood for both 2-axle and Bogie wagons. The J-code was previously used for Bogie Steel Coil wagons. The few vehicles left in this category were folded into the B coded fleet.

JAA
Bogie Covered Hopper

JCA
Bogie Presflo

JDA
Bogie Presflo

JEA
Bogie Aggregate Hopper, NACO Swing-Motion bogie

JFA
Bogie Aggregate Hopper, LTF bogie

JGA/V
Bogie Aggregate Hopper
Bogie ICI Limestone Hopper

JHA
Bogie Aggregate Hopper

JIA/B
Bogie Polybulk
Bogie Powder Hopper
Bogie ‘Clay Tiger’ Polybulk

JJA
Bogie Autoballaster Wagon

JLA
Bogie ‘Procar 80′ Double Deck Car Carrier

JMA
Bogie Coal Hopper

JNA
Bogie Box Open Wagon
CAIB/VTG bogie box open (ex Railtrack)
Network Rail ‘Falcon’ low-sided bogie box open

JPA
Bogie Cement Tanker

JRA
Bogie Box Open Wagon
Bogie Aggregates Hopper

JSA
Bogie Steel Coil Carrier

JTA
Bogie Ironstone Tippler (outer)
Bogie Aggregate Box Wagon

JUA
Bogie Ironstone Tippler (inner)
Bogie Aggregate Box Wagon

JXA
Bogie Steel Scrap Open Wagon
Bogie Aggregate Box Wagon

JYA
Bogie Box Open Wagon

JZA
Long Welded Rail Train Wagons