A 13-year-old singer awarded the golden buzzer on Britain’s Got Talent (BGT) with his choir has seen his dream come true by finishing chemotherapy. Chartham’s Samuel Bourdillon was diagnosed with a brain tumour when he was just four years old. The Kent College pupil took several trips to his GP after vomiting, limping and falling over during the course of several months. Yet Samuel, who lives with mum Karen and dad Paul, was first told he may have cancer when Karen described his symptoms to a family friend and physiotherapist. However, after multiple surgeries and rounds of treatment, he ‘rung…