The Department does not hold this information centrally. There are 10 regional contracts supporting the provision of home oxygen to patients at home in England. Four services are available—emergency or urgent supply, short burst oxygen therapy, long-term oxygen therapy and ambulatory oxygen. The price for each service varies within the different service contract regions. Costs will also vary according to the number of patients using a service or combination of services and the patient's individual needs (for example, the amount of oxygen a patient uses each day).