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Geolocating Images and Video for UK Journalism

How to verify where an image or video was taken using UK-specific visual clues, shadow analysis, satellite imagery, and a structured evidence trail.

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What is geolocation and why do journalists use it?

Geolocation is the process of determining where a photograph or video was taken. In investigative journalism, it is used to verify the authenticity of user-generated content (UGC), confirm or refute claims about where events occurred, and provide independent corroboration of source accounts. It is particularly important when covering protests, civil unrest, conflict, planning disputes, and any story where the location of an event is disputed.

The technique involves identifying distinctive visual features in an image — buildings, street signs, vegetation, terrain, road markings, vehicle types — and matching them against maps, satellite imagery, and street-level photography. Bellingcat has refined this into a rigorous methodology used by international war crimes investigators. UK journalists increasingly use the same techniques for domestic stories.

A geolocation is only as strong as the evidence trail you document. Screenshots with timestamps, URLs, methodology notes, and cross-referenced sources create an auditable record that will withstand editorial scrutiny and, if necessary, legal challenge.

UK-specific visual markers for geolocation

Road signs

UK motorway signs: white on blue. A-road signs: white on green. B-road and local: black on white. Distances in miles (not kilometres). Direction signs use the Transport typeface.

Post boxes

Red cylindrical post boxes with Royal Cypher lettering. Victorian boxes: VR cipher. Edwardian: ER VII. Post-1953 Elizabeth II boxes: EIIR. This can help date photographs and narrow location to installation period.

Vehicle number plates

UK plates: white front, yellow rear, black text. Format changed in September 2001 to the current two-letter area code, two-digit year, three-letter sequence system. Pre-2001 plates follow regional prefix formats.

Street name plates

Most English and Welsh councils: white text on black background with a border. Scottish councils vary — many use white on blue. London boroughs often have distinctive styles.

Architecture

UK building types — Victorian terraces, Edwardian semis, 1960s council estates, 1980s-90s retail park design — can narrow geographic and era range significantly.

Yellow road markings

Single and double yellow lines are a distinctly UK feature. Red lines appear in some London boroughs and city centres (Red Routes). This alone distinguishes UK streets from continental European footage.

Key geolocation tools

Google Earth Pro
Free desktop application with historic satellite imagery going back to the 1980s in some areas. Use the time slider to compare current and historic imagery. Export coordinates in KML format for evidence documentation.
Google Street View
Ground-level imagery with timestamps. Historic imagery available via the clock icon. Document the URL (which contains coordinates) and timestamp in your evidence log.
SunCalc.org
Input a location and date to see predicted sun position and shadow angles at any time of day. Use to verify or challenge claims about when and where an image was taken based on shadow direction and length.
Sentinel Hub (EO Browser)
Free access to ESA Sentinel satellite imagery with near-daily coverage of the UK. Useful for tracking changes over time — construction, flooding, vehicle movements in large areas.
UK Postcodes (postcodes.io)
Free API and lookup tool for UK postcode geolocation. Useful for converting postcode-based location claims to precise coordinates for mapping.
Mapillary
Crowd-sourced street-level imagery, sometimes more current than Google Street View in rapidly changing areas. Available as a map layer in many GIS tools.

When geolocation is essential

  • 1Verifying user-generated images or video from protests, civil unrest, or public events before broadcasting or publishing.
  • 2Confirming or refuting a politician's or official's claimed location at a specific time.
  • 3Investigating planning or development disputes where the before/after location of features is contested.
  • 4Verifying images supplied by a source as part of a leak — is the setting consistent with the claim?
  • 5Cross-border investigations where footage is claimed to be from a specific UK location.
  • 6Environmental investigations where satellite imagery shows changes over time (fly-tipping, deforestation, flooding).
  • 7Insurance fraud or personal injury cases where location evidence is contested.

Red flags that should trigger verification

  • Image or video shared without clear provenance — no EXIF metadata, no original account, unclear chain of custody.
  • EXIF metadata present but inconsistent with claimed location or time (check time zone offsets).
  • Visual markers in the image contradict the claimed location — wrong road sign format, wrong vehicle plates.
  • Shadow direction or angle inconsistent with the claimed time and location when tested in SunCalc.
  • Historic satellite imagery shows the alleged background feature was not present at the claimed date.
  • Image appears suspiciously pixelated or artefacted around key identifying features — possible manipulation.
  • Reverse image search returns earlier instances of the image being used in a different context.

Geolocation evidence checklist

  • I have extracted and recorded any EXIF metadata from the original image file.
  • I have run a reverse image search (Google Images, TinEye) to check for earlier versions.
  • I have identified at least two independent visual markers that match the claimed location.
  • I have cross-referenced with Google Street View — noting the Street View capture date in my evidence log.
  • I have checked satellite imagery (Google Earth or Sentinel Hub) to confirm the claimed features were present at the claimed date.
  • Where a time claim is involved, I have run a SunCalc check on the shadow angles.
  • I have recorded every step of my methodology in a written log with screenshots.
  • I have saved all screenshots with visible timestamps and source URLs.
  • I have had my geolocation peer-reviewed by a colleague before relying on it for publication.

Tools for visual verification

Use our Social Media Verifier checklist and Investigation Risk Register to structure your verification workflow and document your evidence trail.

Social Media VerifierInvestigation Risk Register

Common mistakes

  • Relying on a single visual match rather than building a chain of independent corroborating evidence.
  • Trusting EXIF metadata without checking — metadata can be edited or stripped.
  • Not recording the Street View timestamp — Street View imagery may be years old and the scene may have changed.
  • Skipping the shadow analysis step because it seems too technical — SunCalc is straightforward to use.
  • Using Google Maps street view rather than downloading the desktop Google Earth Pro (which offers historic imagery).
  • Publishing a geolocation without documenting your methodology — if challenged, you need to show your working.
  • Geolocating a private individual's home without considering the privacy and safety implications.
  • Not getting a second pair of eyes on a geolocation before publication — errors are embarrassing and legally risky.

Related guides

UK OSINT Toolkit
Broader open-source intelligence techniques including UK public registers.
Document Analysis
Verifying and cross-referencing documents from public sources.
Working With Whistleblowers
Verifying materials supplied by sources, including visual evidence.
Digital Security
Protecting your investigation from counter-surveillance and device compromise.

Primary sources

Frequently asked questions

What UK-specific visual clues help with geolocation?
The UK has distinctive visual markers. Road signs use white text on blue (motorway), green (A-road), or white (B-road and local) backgrounds. UK post boxes are red and cylindrical — Victorian boxes have different cipher lettering from Edwardian or modern ones, which can narrow the dating of images. Street name plates use white text on a black background in most English councils. Road markings are yellow (no-parking) rather than red as in some other countries. UK vehicle number plates have a distinctive yellow rear/white front format with the DVLA-format registration.
How does shadow analysis work for geolocation?
Shadow analysis uses the angle and direction of shadows in an image to determine the time of day and, when combined with known latitude and longitude, the approximate date — or vice versa. SunCalc.org allows you to input a location and date and see where the sun would be at any time. If you have a candidate location for an image, check whether the shadows in the image match what SunCalc predicts for that location at the claimed time and date. Significant mismatches suggest either the location or the claimed date/time is wrong.
Can I use Google Street View in my evidence trail?
Yes, but carefully. Google Street View imagery is timestamped and you can access historic imagery (use the clock icon in Street View). Screenshot the Street View image with the timestamp visible. Record the URL, which contains the coordinates. Be aware that Street View imagery may be months or years old — it confirms what a location looked like at the time of capture, not necessarily at the time of your subject image. For current-state verification, compare with recent satellite imagery from Sentinel Hub or Planet.
What is the Bellingcat approach to geolocation?
Bellingcat's geolocation methodology is based on a principle they call "ground truth verification": rather than trusting a single clue, build a chain of independent corroborating evidence — landmarks, street furniture, vegetation, terrain, architecture, shadows, and satellite imagery — until the location is identified beyond reasonable doubt. They document every step in a written methodology note, with screenshots. This standard of documentary evidence is what makes Bellingcat's geolocations admissible as evidence before international tribunals.
What are the legal issues around using geolocated imagery in UK journalism?
Geolocation itself is a research technique, not a publication act. The legal issues arise at publication. If the geolocation reveals a private individual's home address, there may be a misuse of private information claim under the Human Rights Act 1998. If the image identifies a crime victim, contempt of court or reporting restrictions may apply. Where the geolocation confirms a public official's location in a matter of public interest, the public interest defence under s.4 Defamation Act 2013 (adapted for privacy) may apply. Always take legal advice before publishing geolocation of sensitive locations.

Related guides

Media LawContempt and Active ProceedingsRead →Media LawData Protection & the Journalism ExemptionRead →InvestigativeUK OSINT ToolkitRead →InvestigativeVerification WorkflowsRead →Digital SecurityDigital Security HubRead →

Primary sources