The index has been compiled from a variety of sources. Some of the main ones are:
Trade directories. Inclusion in one of these indicates that the person concerned ran his own business.
Access to Archives for a variety of deeds, wills, indentures and the very useful records of the Sun Insurance Co. kept at Guildhall Library London
The National Archives will Index,
The Proceedings of the Old Bailey
Papers of William Sargent (aka Largent) at The National Archives
“Uttoxeter and Cork” by Joy Dunicliff
Genealogical database at Gloucester Record Office
Many others have been submitted to me by family history researchers.
“London” was, of course, not an official area for most of the period covered, but I have listed corkcutters working in the London area of Middlesex and Surrey, as such, since the London area was so important in corkcutting.