St Thomas's Hopsital SE1 7EHST THOMAS' HOSPITAL A&E DEPARTMENTSt Thomas' HospitalAccident & Emergency DepartmentLambeth Palace RoadLondon, SE1 7EHMAPWebsiteTelephone: 020 7188 7188If you have been suffering from a medical problem for more than 48 hours you should first try calling your GP surgery or NHS Direct on 0845 4647. If you have a minor injury or illness, you may find it easier to go to the urgent care centre at Guy's Hospital.This service offers PEP (Post Exposure Prophylaxis).