The West Kent map (below left) shows the boundaries of parishes that formed the historical Diocese of Rochester, which is also the area covered by the Society's publication West Kent Sources, and the website Parish Gazetteer.
At the formation of the Society our area was defined as "South East London and western Kent". Thus we extend north to the river Thames and west to the original (pre-1889) Kent/Surrey boundary. This takes in those areas that were successively incorporated into London: first by the County of London in 1889 and the additional area that became part of Greater London in 1965. The Greater London area comprises the boroughs of Greenwich, Lewisham, Bexley and Bromley. The remaining area has always been part of Kent.

Northern Boundary

In 1979 the Woolwich & District FHS was formed. We no longer have a formal boundary agreed with W&DFHS, so our various activities do sometimes overlap.

Southern Boundary

In 1991 the Tunbridge Wells FHS was established, covering the parishes overlapping the Kent and Sussex border around the town of Tunbridge Wells - the extreme southern point of the map.

Following the demise of TWFHS in December 2016 we incorporated their area into NWKFHS. 

Eastern Boundary
This remained ill-defined until Nov 1986 when a meeting was held between ourselves and officers of the Kent Family History Society to discuss a common boundary for project purposes. This was agreed to be a line running from the Thames at Northfleet/Gravesend, then south to the Sussex boundary at Frant 

Liaison

Enquiries to our Secretary which appear to be more properly dealt with by one of our neighbouring Societies are referred to them.