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London, Greater London
Latitude: 51.50732, Longitude: -0.12766
Browse London map 51° 30′ 26″ N, 0° 7′ 40″ W
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London is a city in Greater London at latitude 51° 30′ 26″ North, longitude 0° 7′ 40″ West.


London is the capital city of the United Kingdom. Greater London is one of the nine regions of England and is divided into 32 London boroughs. For ceremonial purpose it excludes the City of London. It is the most populous city in Europe (over twice the population of Paris). All road distances to the destination "London" refer to Charing Cross.

See also Central London


Local User Group
OSM London Flag of the United Kingdom.svg
When: Fortnightly
Where: Different pub each time (map)
mailing list
no mailinglist

A series of London pub meet-ups and mini mapping parties over the summer 2015. These events are free and open to all. We normally have a mixture of old OpenStreetMap hands and new people coming along to find out more. The events might include mapping, but mostly we'll just be sitting around in a pub having a friendly chat about little things like freeing the world's geo-data. We hope you'll join us! Everyone and anyone is welcome.

Upcoming Events

Tue 13th Oct CREdataSummit is a presentations evening for property and estate agent type folks. Harry Wood will give a 15 min talk introducing OpenStreetMap to them. Bishopsgate area. Free to sign up on the website


Thu 15th Oct - Blue Posts pub

On Thursday 15th October we'll have a little pub meet-up at The Blue Posts pub Newman St. from 7pm. here on the map. Special guest Kate Chapman!

The Blue posts pub on Newman St, is an old favourite. Do take note of the location because there is another blue posts in central london. Also note we may be upstairs where there is more space... maybe.

Join us there from 7 to have beers and chat about mapping the world!

Sign up on Lanyrd if you like (We expect between 5 and 10 people, but most people don't bother signing up)

(ongoing) Missing Maps Training series in Swanley

Swanley, Kent, UK weekly training sessions

Monday afternoons & Thursday evenings, mainly at Tallguys's house (just inside the M25 at junction 3) - Training on humanitarian mapping, as a small series of Missing Maps Project events. Make contact if you are interested

Future events

We'll use this wiki page to announce events, as well as Twitter bird.svg @OSMLondon . Announcements may come at short notice!

There’s lots of other events in London e.g. tech meet-up groups, for which OpenStreetMap is relevant. Please use the wiki to pro-actively coordinate the setting up of an “OpenStreetMap presence” at these events… or just go along (Other OSMers may or may not be there)

We’ve got a list of London event venues for future events of a non-pub format. Please add to that if you have ideas or if your organisation would like to host or sponsor an event!

Past events

This series of events follows on from London/Winter 2014-2015 events

So far in this series:

Area Venue lanyrd What happened?
31st Mar Waterloo Kings College eb HOT Missing Maps Project mapping Tanzania
28th April Euston Bartlett School of Architecture eb HOT Missing Maps Project
13th May Marylebone Kings head [2] Mapping! cake diagram, photos
14th May Holborn Nesta eb Talk by Harry Wood (talk) on OpenStreetMap and Nepal earthquake
19th May Clerkenwell OS geovation hub [3] Geomob with a very OpenStreetMappy theme.
Talks from Grant Slater, Andy Allan & Jerry Clough
2nd Jun South Ken Imperial College eb HOT Missing Maps Project humanitarian mapping event
3rd Jun Caledonian Rd Thornhill Arms [4] cake diagram, photos
16th Jun Clerkenwell Y Care offices eb HOT Missing Maps Project humanitarian mapping event tweeted photos
19th Jun Clerkenwell The Easton [5] Pub meet-up. photos
7th Jul Holborn MSF offices HOT Missing Maps Project humanitarian mapping event. photos on facebook
21st Jul Parson's Green The White Horse [6] Mapping evening. photos
4th Aug Euston The Welcome Trust [7] HOT Missing Maps Project humanitarian mapping event
8th & 9th Aug Clekenwell Geovation Hub [8] London Hack Weekend Aug 2015 & OSM birthday. photos
1st Sep Moorgate Skills Matter [9] HOT Missing Maps Project humanitarian mapping event
4th Sep Paddington Monkey Puzzle [10] pub meet-up
24th Sep Deptford Dog & Bell [11] Mapping evening. Cake diagram
6th Oct Euston Facebook offices eb photos on facebook

This list is brought in from the London/Summer 2015 events wiki page (where you can make edits)

OSM Coverage


OpenStreetMap has usable coverage of London and areas within the M25. The coverage density is not as much as the 208 most densely mapped meta tiles in 2013[1]: however, we have mapped nearly all roads and a lot of other features within the M25.

In the early days, we used Yahoo imagery in addition to GPS tracks to sketch in the features, and then add names from Ordnance Survey data. There are some areas which do not have enough detail from surveys and other open data, but in the early days it was worse, with areas around Hillingdon north of Heathrow glowing red on the NoName map. Today, we can use ITO Map to see where we could do a bit more surveying.

For a long time, we have had complete coverage of the London Underground, allowing us to render a Tube Network Map with small details such as track configurations, tunnels and bridges: our List of London Underground stations gives a raw list of stations as we originally surveyed them through GPS. We also have a strong coverage for stations and lines for DLR, Tramlink, London Overground and National Rail networks, and good coverage of most bus routes in London with the help of NaPTAN.

London also has good coverage of specialised information: Amaroussi has added and maintained Street light information for nearly all classified roads, Welshie has been doing most of the speed limits, while other users are adding lanes, sidewalks, surfaces, trees and even the London Congestion Charge.

  1. Mapping London's bus routes will remain a large and ongoing process, because Transport for London frequently alters bus routes to cater for changing demand.
  2. Add the Low Emission Zone.
  3. The public transport scheme is now live, meaning that we will have to update the network: we have to complete the London public transport tagging scheme soon, so that all modes to ensure routing integration and cross-compatibility between the new and old schemes.
  4. Add missing speed cameras and turn restrictions. They are important if OpenStreetMap is going to be a usable backbone for routing devices.
  5. OpenStreetMap is 10 years old this year, and urban regeneration is rendering some areas out of date: for example, the Heygate Estate in Southwark is being demolished and the Alma Estate in Ponders End will follow from next year.

London Boroughs

London is subdivided into 32 boroughs. Within our data we see these represented as admin boundaries, which are now all mapped out. See London borough boundaries for details and links to these.

London boroughs are also UK local councils of course, and with all of these it would be fantastic to see them making use of open geodata from OpenStreetMap, working with our community to supply change updates, or partnering with us to engage local communities via the process of OpenStreetMapping.

We could create wiki pages about the London boroughs.

Barking and Dagenham, Barnet, Bexley, Brent, Bromley, Camden, Croydon, Ealing, Enfield, Greenwich, Hackney, Hammersmith and Fulham, Haringey, Harrow, Havering, Hillingdon, Hounslow, Islington, Kensington and Chelsea, Kingston upon Thames, Lambeth, Lewisham, City of London, Merton, Newham, Redbridge, Richmond upon Thames, Southwark, Sutton, Tower Hamlets, Waltham Forest, Wandsworth, Westminster

…but note that wiki pages about small areas can fall into disuse quite easily, so don’t be too ambitious with info requiring updates. The London boroughs might be a useful subdivision for tracking mapping progress, but probably not through manual updating of wiki pages. One automated tool which uses the subdivision to good effect already is the OSM and OSL differences analysis e.g. see the report for Camden

Out-of-copyright maps of London

There are some Out-of-copyright maps which feature London at low details levels. The most detailed is Richard's scans of the 1933/34 ABC Street Atlas of London (Torrent) (Alternative). Back in the early days (2007) we were able to try and use these to fill in some London details, or at least help us not get lost while we mapped London ourselves! These days there's nothing we can learn from them which isn't already better mapped in OpenStreetMap.

Related projects


  1. (accessed 15 July 2014).

See also: