Betsi Cadwaladr health board's 'many, many failings' criticised over patient found dead in Menai Strait
Iwan Wyn Lewis' body was recovered from the water less than an hour after he left the Hergest mental health unit at Ysbyty Gwynedd
Betsi Cadwaladr health board's 'many, many failings' criticised over patient found dead in Menai Strait
