Hydrogen storage is one of the most important technological issues to be resolved in the move towards a future sustainable hydrogen-based economy. We would like to gain further understanding of the cycling behaviour and origin of hydrogen sequestration in a titanium-chromium-vanadium-molybdenum alloy, Ti25Cr50V20Mo5, as a function of hydrogen pressure and hydrogen loading / unloading (cycling) to determine the hydrogen coordination environment and the reason for deterioration of performance during cycling. We therefore request 7 days on TOSCA to complement structural data obtained from a diffraction experiment on GEM, and to compare the results with INS data collected for a similar alloy of different composition (Ti10Cr10V75Mo5).