17/08/2013 Elvington,York, North Yorkshire. Scottish blind biker Stuart Gunn, of Edinburgh, attempts to break the world speed record for a blind motorcyclist at Elvington Airfield, Elvington nr York, North Yorkshire. Stuart was helped in the rear by his dad Geoff who was in contact via a radio link and was constantly giving plucky Stuart directions and encouragement. Paul Macnamara Ross/Parry Agency