London

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London, Greater London, United Kingdom
Wikidata

latitude: 51.50732, longitude: -0.12766
Browse map of London 51°30′26.35″ N, 0°07′39.58″ W
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London is a city in Greater London, United Kingdom at latitude 51°30′26.35″ North, longitude 0°07′39.58″ West. It's the capital of the UK, biggest city in Western Europe, the birthplace of OpenStreetMap, and home to an active OSMLondon community of mappers and map data users running regular events

Twitter user@OSMLondon


Osmlondon.png


Events

Local user group
OSM London Flag of the United Kingdom.svg
Meetings
When: ~Monthly
Where: Different pub each time (map)
Mailing list
mailing list – archive
Website
[1]
Image
9th-anniversary-london.jpg

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, or might include "Q&A" presentations, but mostly we're just sitting around (in a pub?) having a friendly chat about little things like mapping the world and releasing it for free! We hope you'll join us! Everyone and anyone is welcome.

Upcoming Events


Pub-16.svg Tue 12th July - The Jack Horner

On Tuesday 12th July we'll have an OpenStreetMap pub meet-up at The Jack Horner Pub, Tottenham Court Road (here on the map), from 7pm. Join us for friendly social beers and chit chat on the subject of OpenStreetMap (contributing/using experienced/beginners, whatever interests you in and around OpenStreetMap!)

Whether you're a mapper, map user, or just curious, come join us! If you think you may have trouble recognising anyone, turn up at 7:30pm (when the group will be more assembled), and look out for maps or OpenStreetMap hi-viz vests or polo shirts.

Mark yourself as "attending" on osmcal.org if you fancy it. Not everyone bothers doing so. It is just a pub after all. You can expect between 5 and 10 people attending.





Humanitarian mapping events are still happening regularly. This page is not going to be the best place to stay up-to-date with those. Follow Missing Maps London on eventbrite. Typically there's one big event happening every month (beginners welcome) plus a smaller "mid-month" event.





Future events

We'll use this wiki page to announce events, as well as Twitter user@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

Date (2022) Area Venue listing
site(s)
What happened?
10th Feb Tottenham Ct Rd Blue Posts [2] A social pub meet-up

This series of events follows on from London/2021 events


This list is brought in from the London/2022 events wiki page (where you can make edits)

OSM Coverage

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See also Central London for some focus on the centre, and Greater London for the wiki categorised region of England

Coverage summary

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.

Priorities
  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. 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. In the past some automated tool used borough subdivision to good effect (e.g. the FHRS/OSM comparison tool) while others prefer to use post code districts (e.g. postboxes progress tracker)

The River Thames

OpenStreetMap began in London, and the Thames flowing through London was one of the first places where we pondered the challenge of mapping large rivers (in a way which allowed software to render it properly) discussing the details of Tag:natural=water+Tag:water=river. The tidal section of the river was initially brought in by the coastline imports, and then people tracing from landsat.

The River Thames rises at Thames Head (near Kemble / Cirencester map) or Seven Springs (near Cheltenham map) depending on who you talk to.

It flows through Lechlade, Oxford, Abingdon, Wallingford, Reading, Henley-on-Thames, Marlow, Maidenhead, Windsor, Eton, Staines and Weybridge, before entering the Greater London area.

Something not immediately obvious is that much of the Thames in London is tidal. This means that its riverbanks are technically part of the coastline. If feels a bit strange to be stood to the west of the centre of London in Richmond and be 'by the sea'. The Thames is tidal up to Teddington Lock - between Richmond and Kingston. map, through London (and Central London)...and out to sea. map

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

References

See also: