Food Safety Report: Greggs, Henshaw Street, Oldham, UK 1 year ago • details 21 Comments Comment Suspected food poisoning. Symptoms: Nausea, Stomach Pain, Cramps Suspected source: Greggs vegan sausage roll Onset: Right away Duration: 12 to 24 hours Sick: Me Additional information: It tasted fine then the very last bite tasted foul.