Mindfulness Based Cognitive Therapy (MBCT) continues to gain evidential support as an intervention to impact on relapse and recurrence of depression. Researchers and MBCT Clinicians seek higher levels of treatment fidelity to maximise positive outcomes, through the use of treatment manuals, assessment scales and other supporting tools. Semi-structured group interviews with MBCT trained clinicians and subsequent thematic analysis, identified core elements of a new MBCT Self-Assessment scale and benefits, challenges, and enablers to implementation of MBCT training. The study findings support inclusion of an MBCT-Self Assessment Scale in MBCT Program implementation and suggest a range of other practical strategies for improved treatment fidelity.