The AEC K-type was a type of bus chassis built by Associated Equipment Company (AEC) from 1919 until 1926, mainly for use in London by the London General Omnibus Company (LGOC). The K-type was an important design that ended the horse-bus influence on bus layout apparent in the LGOC X-type and LGOC B-type. By placing the driver beside the engine and using a wider, straight-sided body, seating capacity was increased from 34 passengers to 46 passengers. The open-top body continued to use perimeter seating on the upper deck, but the additional width allowed the use of transverse seating on the lower deck. The bodywork was typically built by LGOC, but Short Brothers, Brush and Strachans all built smaller numbers to the same standard design.