Dr Graham McCall could be enjoying a relaxing retirement in Patrick, following a varied career in medicine, as a general surgeon and a GP in inner city Sheffield.  But instead, he's reinstated his medical qualifications and works on the Covid 111 Helpline.  He's also deeply involved in the life and ministry of his local church - Kirk Patrick - and keeps his vibrant Christian faith at the very heart of all he does.  On At Your Service this week, he tells his story - chooses a favourite Bible passage,  and adds some uplifting music.