London Transport purchased 84 Guy Specials in 1953, for use on lightly used country area routes. These unique vehicles were a mix of the Guy Motors Vixen and Otter models, which where combined with an attractive 26 seat Eastern Coachworks body design. The majority of vehicles remained in service until the mid 1960's when LT's desire for standardization finally resulted in the replacement by the RF type.
 
Many of the cast off GS buses found further service with independent operators which among others included Tillingbourne Valley Services, Southern Motorways and West Bromwich Corporation. The GS has also proved to be a popular choice with preservationist's, with a surprisingly large number of vehicles from this small class, still active today.