The thesis studied the development and implementation of the conceptual Continuous Improvement Teamworking (CIT) Model for strategic performance improvement in retail banking operations. The investigation using of a dominant qualitative to a Less-dominant quantitative approach as a mixed-method strategy revealed the importance of the CIT Model realised through the CTIO (Concern-Task-Interaction-Outcome) Problem-Solving Cycle. The CTIO Cycle is a variant form of the traditional Deming-Shewhart PDCA (Plan-Do-Check-Action) Cycle.