Missing school teacher Darren Blyth A MAJOR search has been carried out for a missing teacher - involving a helicopter, aircraft, drones, and nearly 100 people. Police are growing increasingly concerned for the welfare of Darren Blyth, who left his home in Trimdon Station, County Durham, at around 7pm on Wednesday, stating his intentions to take photographs at Hawthorn Dene. The 55-year-old, who is a science teacher at Stokesley School was reported missing shortly after midnight when he did not return home. The Teesdale and Weardale Search and Mountain Rescue Team were called by Durham Police in the early hours of Thursday to help in the search.