Food Safety Report: Tim Hortons, Royale Leisure Park, Kendal Ave, London W3 0PA, UK 11 months ago • details Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Chills, Headache Suspected source: Handoffs hot chocolate with marshmellow Onset: Less than 4 hours Duration: 12 to 24 hours