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This unit has been constructed for statistical reporting purposes only. It has no legal existence.

London and Middlesex were always two quite separate Administrative Counties, until they were both abolished in 1965 with the creation of the Greater London Council, but they were listed together in the Farm Census from the 1930s to the 1960s, and also by the Land Utilisation Survey of Great Britain.
This unit was part of the following units:
| Name | Type | Start | End | Authority |
|---|---|---|---|---|
| ENGLAND Dep | Country | Ministry of Agriculture, Agricultural Statistics (HM Stationery Office) |
If the boundaries of the Administrative County changed over time, this map will show all the different boundaries.
How to reference this page:
GB Historical GIS / University of Portsmouth, Middlesex and London Administrative County (pre-1974) through time, A Vision of Britain through Time.
URL: https://www.visionofbritain.org.uk/unit/12799196
Date accessed: 12th February 2026