Sets

Set WPG300 which includes a Wrenn 2-6-4 tank loco and Hornby Dublo unmodified wagons and a pair of suburban coaches.
(The wrenn RAILWAYS coupling pack is obviously a later addition!)
 

The box end. This implies that the boxes may have been made for all three sets (100, 200 and 300) and only the insert would be specific to a set.  There is a pen-marked X in the WPG300 box on this set.
 

Pictures and information above courtesy Marwan Nusair

Railway Modeller Feb 1968

Train Collectors Society Newsletter August 1982

1974 Catalogue