Sensor and Software Use for Improved Glucose Control in MDI Managed Diabetes

Inclusion Criteria: * Age 18 years and over * Type 1 diabetes on MDI with bolus injections for \>6 months prior to study enrolment or Type 2 diabetes treated with 2 or more insulin injections daily. * In the investigator's opinion, thought technically capable of using FreeStyle Navigator GM System device. * HbA1c between 7.5 and 12.0% (58 to 108 mmol/mol) for previous test obtained within 6 months prior to point of enrolment Exclusion Criteria: * Concomitant disease or condition that may compromise patient safety, including unstable coronary heart disease, cystic fibrosis, serious psychiatric disorder, or any uncontrolled chronic medical condition * Female subject is pregnant or planning to become pregnant within the planned study duration. Subjects who become pregnant during the study will be discontinued from the study. * Currently using / has previously used a Continuous Glucose Monitoring System within the last 6 months. * Currently using Continuous Subcutaneous Insulin Infusion (CSII) * Currently using basal/long acting insulin only. * Participating in another study of a glucose monitoring device / drug that could affect glucose measurements / management * Known allergy to medical grade adhesives * In the investigators opinion is unsuitable to participate due to any other cause/reason.