The purpose of this guidance is to consider current ultrasound referral practice against existing Professional Indemnity Insurance (PII) arrangements for members of the Society of Radiographers (SOR) who are practising sonographers. This guidance also applies to those individuals who are members of the Society for  Vascular Technology of Great Britain and Ireland (SVT) and who obtain PII through the SOR. In particular, this guidance identifies the practice requirements of the SOR in order for individuals to remain within the terms of the professional indemnity provided. This document is additional to existing guidance on the Society's professional indemnity membership benefit as published in the SCoR document 'Summary of Professional Liability Insurance Policy' which members are strongly advised to read