London borough boundaries

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London Borough Boundaries are the key admin boundaries within the greater Greater London area, subdividing it into 32 boroughs.

Administrative area Note
Barking and Dagenham Relation 185483 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Barnet Relation 51831 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Bexley Relation 51903 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Brent Relation 75767 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Bromley Relation 152126 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Camden Relation 51827 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Croydon Relation 51907 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Ealing Relation 181321 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Enfield Relation 51841 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Greenwich Relation 51902 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Hackney Relation 51806 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Hammersmith and Fulham Relation 184484 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Haringey Relation 51814 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Harrow Relation 181292 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Havering Relation 185478 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Hillingdon Relation 183779 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Hounslow Relation 51848 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Islington Relation 51821 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Kensington and Chelsea Relation 51793 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Kingston upon Thames Relation 51909 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Lambeth Relation 184710 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Lewisham Relation 184724 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
City of London Relation 51800 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) See note on London Bridge below
Merton Relation 51905 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Newham Relation 185505 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Redbridge Relation 65598 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Richmond upon Thames Relation 151795 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Southwark Relation 184700 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx) See note on London Bridge below
Sutton Relation 17529 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Tower Hamlets Relation 51805 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Waltham Forest Relation 65595 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Wandsworth Relation 51906 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)
Westminster Relation 51781 (XML, Potlatch2, iD, JOSM, history, analyze, manage, gpx)

Note that most online maps showing the position of the borders are copyrighted. Even supposedly open licensed maps on wikipedia are actually derived from copyrighted sources. As of February 2013, all the boundaries are mapped from the most accurate source which we can use at the moment - OS Boundary Line data. Ideally we'll keep it clean by surveying signs in the streets. Keep a look out for those "Welcome to London Borough of X" signs while you're out and about.

According to the OS Boundary Line data, the boundary between Southwark and the City of London is roughly the centre-line of the Thames. However the City of London Corporation controls (through Bridge House Estates) the whole of London Bridge so the boundary has been adjusted in OSM to cover the whole bridge. A similar situation exists at Blackfriars Bridge, although this is reflected in the OS data.

Boundaries between the London boroughs have been tagged boundary=administrative and left:district=name right:district=name

The OSM Inspector tool is excellent for checking that a boundary is complete and that all the tagging of the ways and relation is correct. A relation of London Borough Boundary relations is available for reference.

Wikipedia has a rather comprehensive list of boundary changes within London, which links to the relevant governmental orders which made the change. Although many refer to maps not included, the explanatory notes may assist mapping of both the Greater London and borough boundaries.


progress tagging borders as of Jul 2009