Inclusion Criteria:  Age over 18 years Diagnosed with cardiac AL amyloidosis using standard diagnostic techniques and criteria at the NAC Willing and able to provide written informed consent  Exclusion Criteria:  Patient who already have a cardiac device inserted, such as a permanent pacemaker (PPM), implantable cardioverter-defibrillator (ICD) or implantable cardiac monitor (ILR) Other pre-existing cardiac or other pathology which, in the investigators opinion, would adverse affect primary outcome data collection Contraindication to CMR imaging