http://www.legislation.gov.uk/wsi/2025/775/madeThe A55 Trunk Road (Pen-y-clip Tunnel, Conwy County Borough) (Temporary Traffic Prohibitions & Restrictions) Order 2025Gorchymyn Cefnffordd yr A55 (Twnnel Pen-y-clip, Bwrdeistref Sirol Conwy) (Gwaharddiadau a Chyfyngiadau Traffig Dros Dro) 2025King's Printer of Acts of Parliament2025-07-01