Plain Software provides clinical decision support for nurse led telephone consultation and face to face consultations. It is the only company in the world to have developed such products and these are being used in GP surgeries, GP Co-operatives, Ambulance Services, MIUs and elsewhere in both the UK and Europe. It is the only clinical decision support system to have undergone independent RCT Research. It differs to all other available systems as it is not a set of algorithms but respects the experience nurse user to lead the consultation.