Between 1792 and 1799 Horwood published a Plan of the Cities of London and Westminster the Borough of Southwark and Parts adjoining Shewing every House.
After he decided to chart the entire city of London, down to each individual building, Horwood set about soliciting subscriptions to finance the project in 1790.
Despite acquiring royal patronage from King George III, the project suffered financial hardship, making it even more difficult to produce.
The engraving, considering the immense mass of work, is, I flatter myself, well done.Horwood also published a similar large-scale plan of Liverpool, in six sheets, in July 1803.
[5] In 1985 a reduced facsimile edition of the 1813 map was published in volume format by Harry Margary in association with the Guildhall Library, with a superimposed grid, full place-name index, and introductory notes by Paul Laxton, under the title The A to Z of Regency London.