- Welcome to the North West Wales NHS Trust Internet Site. This site is now being constantly developed and aims to provide information and resources for both the patients, visitors and health professionals. Croeso i Safle Rhyngrwyd Ymddiriedolaeth GIG Gogledd Orllewin Cymru.Mae'r safle'n cael ei ddatblygu'n gyson a'r nod yw darparu gwybodaeth ac adnoddau i gleifion ymwelwyr a gweithwyr iechyd ...www.northwestwales.org