Cathal Henry grew up in Newry, a small city near the border with the Republic of Ireland. ‘Growing up near the border in the 1990s, experiencing armed checkpoints felt normal,’ he says. ‘It’s only since they disappeared that it became apparent how abnormal they really were.’ 

During the 30-year conflict known as The Troubles, checkpoints and watchtowers peppered the 500-kilometre border between Northern Ireland, part of the UK, and the independent Republic of Ireland.