A range of directories were published over the years, and are now a valuable source of information.
Kelly's Directory (or more formally, the Kelly's, Post Office and Harrod & Co Directory) was a trade directory in England that listed all businesses and tradespeople in a particular city or town, as well as a general directory of postal addresses of local gentry, landowners, charities, and other facilities.
In effect, it was a Victorian version of today's Yellow Pages.
The originator of the directory was Frederic Festus Kelly, who in 1835 or 1836 had become chief inspector of letter-carriers for the inland or general post office.
Here are links to pdf files of the pages for Markfield from selected directories across the years.