London County Council Tramways posters first appeared in February 1922. The initial set of 12 black and white posters was designed by students of the Central School of Arts and Crafts. In 1923 the first colour posters were produced, again designed by students of the Central School. However, by 1927 other artists and agencies were employed in their place and not one poster was attributed to the Central School students. The posters varied in size from 72cm x 36cm, the size of a tram's display panel, to 152cm x 102cm.
The posters depicted a range of subjects and messages. Some suggesting day trips in London (to the London Zoo, parks and gardens, the Thames, museums and galleries) and others advertising sporting venues (football and cricket), Christmas shopping and promoting late night cheap travel. In 1933, the final posters were produced. Among them were warnings for passengers to take care when alighting.