Who We Are 2019 DSAA approved a grant to the South Western Ambulance Service Charity, to support the training and equipping of volunteer community first responder groups within Dorset and Somerset. In April 2019, in addition to the critical care service we provide by helicopter and critical care car, our practitioners took to the road, in a bid to take outreach to a new level. This innovative additional DSAA service operates between the hours of 10.00am until 10.00pm. Manage Cookie Preferences