Editing Isleworth (section)

===20th century===
The first half of the 20th century for Isleworth generally was characterised by a very substantial amount of artisan and white-collar residential development throughout the town, at the expense of numerous market gardens. <ref>{{Cite journal |title=The Coming of the Mass Market, 1850–1914 |url=https://link.springer.com/book/10.1007/978-1-349-16685-5 |journal=SpringerLink |language=en |doi=10.1007/978-1-349-16685-5.pdf}}</ref> The former western area was ceded to the town and parish of [[Hounslow]], which was invested as a civil parish in 1927. This period also included the building of several new factories and offices, mostly towards the north-east, up to the town's eastern boundary with New Brentford. This rapid spread of building transformed the nature of Isleworth's layout in the space of just fifty years, from an agrarian pattern to an urban one.

Isleworth's former Thames frontage of approximately one mile, excluding that of the [[Syon House|Syon estate]], which is shared with Brentford, was reduced to {{convert|0.5|mi}} in 1994 when a borough boundary realignment was ordered by the UK's Local Government Minister to add land to the district of [[St Margarets, London|St Margarets]], Twickenham.<ref>{{cite web|url=http://www.opsi.gov.uk/SI/si1993/Uksi_19931391_en_1.htm|title=The Greater London and Surrey (County and London Borough Boundaries) (No.4) Order 1993|website=www.opsi.gov.uk|access-date=3 April 2018}}</ref>