Daniel Shaw has over 18 years’ experience working in medical physics departments around the UK and is an experienced radiation protection advisor and medical physics expert for diagnostic and interventional radiology physics. Dan is a member of the IPEM Evidence Based QA working party, former member of IPEM’s Diagnostic Special Interest Group (DRSig) and has contributed to several working parties providing national guidance for the safe clinical use of radiation. Jason Fazakerley is an experienced radiation protection advisor and medical physics expert at Integrated Radiological Services (IRS) Ltd and an active member of the IPEM Evidence Based QA Working Party. Debbie Saunders is an experienced medical physics expert in the field of diagnostic and interventional radiology. Debbie is a former chair of IPEM’s Diagnostic Special Interest Group (DRSig) and has contributed to several working parties providing national guidance for the safe clinical use of radiation. Ian Honey is an experienced medical physics expert and radiation protection advisor. Ian is a former chair of IPEM’s Diagnostic Special Interest Group (DRSig) and chairs the IPEM Evidence Based QA working party and has contributed to several working parties providing national guidance for the safe clinical use of radiation.