South East Coast Ambulance Service (SECAmb) said paramedics were called shortly before 12pm to West Tarring Allotments in Worthing ‘following a report that a person had collapsed’.
"Crews attended the scene and were assisted by the air ambulance, which landed in nearby Marine Parade,” a SECAmb spokesperson said. 
"Sadly, the patient was confirmed deceased the scene. Her next of kin have been informed.”