The GDS Transport font is a custom typeface created for the UK Government Digital Service and is not available for free public download

• Do not download from torrent sites or "free font" aggregators that offer the original "Transport" or "GDS Transport" named files. These are often pirated.
• Do not use free clones to create counterfeit road signs or official government documents.
• For commercial projects (logos, product packaging, paid apps), buy a proper license from a foundry like K-Type (they sell "Transport New" for ~$50) or use Overpass (free for commercial use).

So, why choose GDS Transport over other fonts? Here are just a few reasons:

Official Guidance:

The UK government itself recommends that internal services not hosted on the main GOV.UK subdomain use alternative fonts like Arial instead of GDS Transport to avoid licensing issues. Legal Alternatives to GDS Transport

Transport

: The original digitized version available through foundries like URW++ . Can I use the GOV.UK fonts? - Design in government