Sometimes it takes centuries; sometimes it takes decades, but invariably, the legacy of colonialism lingers for too long after its demise; and this we see in the border that separates the six counties of Northern Ireland from the Republic of Ireland. The 1998 Good Friday Agreement was one of the best events in Irish history, but now, as Brexit looms large, the cracks are reappearing. Plantations and penal laws shaped this island of ours, not Vikings and Normans.

Produced and presented by Bernie Dwan