1st Line Defence prepared a UXO desktop (first-line) study in 2018 to assess the risk of encountering unexploded ordnance along the proposed Greenlink cable route. The study informed route design, micro-routing decisions and the UXO management strategy for pre-installation and pre-lay works, and fed into the EIAR UXO assessment and proposed mitigation hierarchy (avoidance, visual inspection, removal and as a last resort controlled demolition following industry best practice).