The importance of maintenance has increased, as high productivity and quality can be achieved by means of well-developed maintenance strategies. However, this assumes that maintenance is controlled and equipment is stopped for maintenance using primary methodologies such as Total Productive Maintenance and Reliability Centred Maintenance. This paper identifies the barriers to the implementation of both methodologies within Small to Medium Enterprises and develops a new methodology called Advanced Intergraded Maintenance Management System (AIMMS). The results indicate that AIMMS supports strategic maintenance decisions, and helps to increase equipment effectiveness through prioritising equipment criticality and focusing on specific resources to maximise gains based upon a return on investment Maintenance Strategy Development.