Princess Kate has issued a heartwarming message of solidarity to cancer sufferers in today’s landmark video announcing the end of her preventative chemotherapy. In the emotional three-minute clip, shot by trusted videographer Will Warr, the Princess of Wales can be seen frolicking in the Norfolk countryside alongside her husband and three children. The video – which contains a number of shots of the Waleses enjoying the forests, fields and beaches of the historic East Anglian county – is overlaid with Kate’s voice as she speaks out on her treatment’s progress. Kate tells listeners how the last…