But when he took them to a "fence" - and intermediary who sells stolen goods to discreet buyers - he discovered they were just glass.

The Ask for Angela initiative, a project in place at thousands of venues nationwide, aims to provide a discreet lifeline for people who believe they are in danger.

The Ask for Angela initiative, a not-for-profit project in place at thousands of venues nationwide, aims to provide a discreet lifeline for people who believe they are in danger.

This space will be off-limits to humans once the crossing is completed, with locked gates to keep people out and discreet fencing to guide wildlife away from nearby homes into the wild hills beyond.

“They keep to themselves and are much more discreet than the others. We see them very little,” says Claire Millot, a volunteer for Salam, an NGO that supports migrants in Dunkirk.