Area Maps and Tables

The Area Maps and Tables each cover a specific geographical area, rather than a fixed set of constituencies (as is the case for the Constituency Charts and Election Results Tables).

By way of an example, in the Westminster & City of London Area Map and Table, the sub-area around Bayswater, is named sub-area a.  From the table it can be seen that this sub-area was in Paddington South from 1885 to 1974, in Paddington from 1974 to 1983, in Westminster North  from 1983 to 1997, in Cities of London & Westminster from 1997 to 2010, and finally back in Westminster North from 2010 to now.  It is estimated that sub-area a contains 17% of the electorate in the 2010 constituency Westminster North.

Minor changes resulting from interim reviews carried out by the Boundary Commissions between the main periodical reviews are generally not shown.  A few exceptions are made where such changes are more substantial (e.g. Milton Keynes 1992, Oxford 1964).  Sometimes the boundaries shown are those revised by the interim review, especially if these were in force for more elections than the original.

New Area Maps and Tables

These are of a similar format to those created originally, but with sub-Areas now denoted by numbers rather than letters.

However, there has been a change to the methodology of calculating sub-Area sizes.  Rather than using the Media Guide estimates going back to 1974, only the most recent version is used.  (Until the 2023 Review Media Guide is published, estimates of the transfers of electorate have been derived from data on the Electoral Calculus website.)  The estimate of sub-Area size (as a percentage of its current constituency) within each area transferred  in the 2023, is calculated based on population, using a QGIS analysis of a constrained UK population tif file with a resolution of 100m.  The percentage estimates derived by this methodology are no longer rounded and are displayed to one decimal place.