In the Duke of York Square there's is a cast of a Hans town with a boy leapfrogging over it . Next to the boy is a seated girl. (V2) The note on the girl's plinth says that these children are dressed in the style of around 1814 from the Royal Military Asylum located in this site from 1803 to 1909. I think they are very charming.
(Photo taken just off King's Road - London)