City of London Livery Companies - A complete list of livery companies in the City of London with some dating back to the 1600's.
http://www.medievalgenealogy.org.uk/links/citycos.shtml
St Helen's Bishopsgate - A London City church providing service details and times along with their marriage, funerals and christening services.
https://www.st-helens.org.uk/
