The K-type, together with the larger S-type and more advanced NS-type, remained the standard London bus until 1930, when the introduction of the LT and ST types began.
The K-type, alongside the larger S-type and more advanced NS-type, was the standard London bus from 1918 to 1930. The arrival of the LT and ST models in 1930 marked a change in the city's bus fleet.