st john ambulance northern ireland st john ambulance northern ireland st john ambulance northern ireland (sjani) is a voluntary organisation based in northern ireland. it teaches both adults and children first aid, provides services at public events and prepares first responders what to do in emergencies. it also provides courses for young adults (known as cadets), teaching them what to do in an emergency, as well as teaching communication, recording and observation skills. st john ambulance northern irelandabbreviationsjanifounded1881typenon-governmental, charitable voluntary organisationregistration no.nic103839location35 knockbracken healthcare park, saintfield road, belfast, bt8 8racoordinates54°32′09″n 5°54′29″woriginsst john ambulanceservices community service emergency medical services youth programmes key people paul archer (director) james johnston (director) websitesjani.org the organisation is based in northern ireland and is a commandery in the international st john ambulance movement and is a registered charity under the charity commission for northern ireland's register.