As part of a testing regime, a smoke test will take place in the Frontier Tunnel on Thursday  12th May between 12 00 – 19 00hrs.  

A statement from British Forces Gibraltar follows below:

The tests will be carried out throughout the day whilst avoiding scheduled flights. 

The public should be aware that an emanation of smoke will be encountered at the Northern  Approaches. 

Members of the public should not be alarmed.