Martin Clunes has returned to Cornwall to shoot season nine of medical drama Doc Martin. Filming for the ninth season of the drama, which airs on ITV in the UK and Acorn TV in the U.S., has begun with Clunes returning as Dr. Martin Ellingham, the GP with a brusque bedside manner and a phobia of blood. Set in the idyllic hamlet of Portwenn in Cornwall, the show has been commissioned for an eight-episode run. The regular cast returns with Caroline Catz playing Doc Martin's…