English Counties Codexery

Middlesex

Historic English county, largely absorbed into Greater London.

Middlesex is one of the historic counties of England, second smallest after Rutland. Its boundaries largely followed the rivers Thames, Lea, and Colne, with a line of hills forming its northern border with Hertfordshire. The county's name derives from its origin as a homeland for the Middle Saxons in the early Middle Ages. Its former area now lies almost entirely in Greater London, with smaller parts in Hertfordshire and Surrey.

Type
Historic county of England
Area rank
Second smallest among historic English counties
Origin
Homeland of the Middle Saxons
Boundaries
Rivers Thames (south), Lea (east), Colne (west); hills to north
Notable divisions
Six hundreds: Edmonton, Elthorne, Gore, Hounslow (Isleworth), Ossulstone, Spelthorne
Key administrative change
1889: part became County of London; remainder formed administrative county of Middlesex
Dissolution
1965: almost all area incorporated into Greater London

Lore & Background

Middlesex has its roots in the settlement of the Middle Saxons, a province that likely included much of Hertfordshire. The name means 'territory of the middle Saxons,' from Old English 'middel' and 'Seaxe.' The county is recorded in the Domesday Book of 1086 as divided into six hundreds. The City of London became a self-governing county corporate in the twelfth century, though the sheriffs of London maintained jurisdiction in Middlesex. The Tower Division (Tower Hamlets) had considerable autonomy under its own Lord Lieutenant.

Reader's Guide

Middlesex is significant as one of the historic counties of England, its name preserving the legacy of the Middle Saxons. Its gradual absorption into Greater London, completed in 1965, reflects the immense growth of the metropolis. The county's governance history illustrates the tension between local administration and the expanding capital: the City of London remained separate, the Tower Division enjoyed autonomy, and the Metropolitan Board of Works and Metropolitan Police developed to manage the growing urban area. The creation of the administrative County of London in 1889 and the later formation of Greater London in 1965 effectively dissolved Middlesex as a distinct entity, though its name persists in postal addresses and historical references. The county's boundaries, defined by rivers and hills, shaped the development of London's suburbs.

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