The service depends entirely on voluntary donations from the public. Originally, blood was collected from various donor clinics located over the country. In 1994, the first mobile session was held in Elstree, hosted by The Joely Bear Appeal. In the South West from 1946 and since the formation of the NHS the service was primarily a mobile collection service visiting all parts of the mainly rural community. Originally Local Organisers called up the Donors from their own lists; this only changed in the 1990s. This link with the Local Organisers was inherited from the Wartime Red Cross (mainly) and St.Johns blood collection teams. These mobile teams continue to collect, but two centres- Bristol and Plymouth (Derriford) have static bases in local venues. Currently, blood donation sessions are set up throughout the country and take place in many diverse venues, from village halls, workplaces and mobile collection units (known as Bloodmobiles). Donors are generally required to be fit and healthy, weigh and aged between 17 and 60. However, regular (healthy) donors are permitted to donate past the age of 60 as long as they remain healthy. Donors are encouraged to give blood up to three times a year (once every 16 weeks). Since February 2012, male donors have been allowed to donate up to four times a year. In 2013-14 1,986 people complained they had been turned away from walk-in sessions. 1,949 said they did not have their blood taken even when they had made an appointment.