| Green badge | Yellow badge | |
|---|---|---|
| Licence | All London | Suburban |
| Can be hailed | Anywhere in Greater London | Only in one of nine outer sectors |
| Runs | All 320 Blue Book runs | The sector's own runs |
| Radius at each end | A quarter of a mile | Half a mile |
| Self-assessment and written exam | Yes | No |
| Licensed drivers, September 2026 | 14,196 | 1,506 |
The badge itself
Every taxi driver wears a badge while working, green or yellow, with the badge number across the middle, and shows matching identifiers in the cab's front and rear windows. Suburban identifiers carry the sector's code, S1 to S9.
Our guide green or yellow badge lists the boroughs in each sector.
Sources
- TfL, Learn the Knowledge of London, The Knowledge
- TfL, Taxi and private hire driver policy, version 6.0, 1 September 2026, sections 3.11.1 and 4.7.2
From the guide: Green badge or yellow badge?