The series was started in 1933 and continued until 1984, by which time about half the country had been covered. The series was sponsored by the oil company Shell. The original guides were published on a county-by-county basis, under the editorial control of the poet John Betjeman and (later) the artist John Piper.
During the early 1960s a series of 48 cheaper Shilling Guides appeared, much to Betjeman's annoyance, especially as they sold in greater numbers. Published jointly by Shell and BP, each had just 20 pages with a full colour card cover, representing highlights of the county covered, and included a two colour map of the area, preceded by an essay on the history and landscape, and followed by a short gazetteer of main towns and tourist attractions.
From the late 1950s to the early 1970s, a series of general titles under the Shell Guide banner were produced, covering most of the countries in northwest Europe. Guides to subjects such as rivers, islands, viewpoints, archaeology, gardens, flowers, history, wildlife and museums were also published.
In 1987, Shell issued a final series of New Shell Guides, published by Michael Joseph and generally covering rather larger areas (eg. Northern Scotland and the Islands) than in the earlier series. Whilst the original Shell County Guides are now highly collectible, the later titles (published by Faber & Faber, Ebury Press or Michael Joseph) tend to be shunned by collectors and book dealers alike, as supply exceeds demand.