The EPSRC funded Oxford Diffraction Gemini Ultra diffractometer operates using either CuKα or MoKα radiation allowing crystal structures to be determined for a range of materials including pharmaceutical and small biological molecules, as well as molecular and extended organic and inorganic compounds. Data can be collected under an inert nitrogen atmosphere between 90 and 500 K (-183 and 227 °C), useful for studying phase transitions, changes in molecular geometry and intermolecular interactions as a function of temperature. We can offer data collection solely or data collection with full structure determination. Full structural reports are available in a choice of standard formats.