Who is John Hunt? The BBC Five Live racing commentator whose wife and two daughters were 'murdered' in deadly crossbow rampage

There has been an outpouring of support for BBC Five Live racing commentator News Today John Hunt after it was revealed his wife and two daughters were victims of a deadly crossbow attack at their home.
John's wife Carol, 61, and daughters Louise, 25, and Hannah, 28, were found fatally injured at their £800,000 detached home in Bushey, Hertfordshire, last night.
Kyle Clifford, 26, from Enfield, is being hunted by police and is believed to be armed and dangerous.  
BBC stalwart John Hunt has worked at the corporation for 30 years as a racing commentator and News Today previous to this worked as a police officer.