ADR Tunnel Codes in Great Britain
23 April 2025
Are you aware of the different tunnel codes when moving Dangerous Goods in Great Britain and which tunnel codes apply?
In a recent update on the GOV.UK website they have listed the 5 different tunnel codes grading from A to E, with A being low risk to E being very high risk!
There are 10 tunnels in Great Britain, however all leaning towards the medium to very high risk, placing restrictions on the carriage of dangerous goods through the tunnels.
The 10 tunnels listed are:
| Tunnel | Category |
| Blackwall | E |
| Clyde | D |
| Dartford | C |
| East India Dock Road | E |
| Heathrow Airport | Category E between 0400 and 2300
Category C all other times |
| Limehouse | E |
| Mersey | D |
| Rotherhithe
Silvertown |
E
E |
| Tyne | C |
To keep up to date on any changes click here