Specifically this activity will lead to a series of components and sub-system developments; Rb gas cells with tuned buffer gas compositions for use as resonance or locking cells. Supporting developments in laser cooled Rb systems will be a key enabling element of this project. This project will aim to explore and solve current implementation issues in Rb Matter Wave Interferometry (MWI) and develop demonstrator systems to verify key performance attributes. New Rb cell containment techniques to expand the applicability of the systems already developed will also be explored.