SERV OBN - Service by Emergency Rider Volunteers -Oxfordshire, Buckinghamshire, Berkshire, and Northamptonshire - provide an out of hours rapid response service to the NHS hospitals in our region, delivering urgent blood, blood products, medical supplies, medical equipment, and human donor milk, during the times when other transport options to the NHS in our region may be limited, such as every night, weekends, and public holidays . We provide our service using a fleet of liveried motorcycles.