We have prepared some new mixed-metal oxides using a chemical synthesis approach that provides access to materials not seen using other techniques. The materials are potentially useful in catalysis and in electronic applications but in order to understand their properties we need to make a full study of their atomic-scale structure. We have already used a number or methods in our own laboratory, but in order to complete this analysis, we need to use neutron scattering techniques. The use of ISIS will uniquely allow us to measure data that describe both the average arrangement of atoms in the whole crystal structure but also the local arrangement, including any deviation from the ideal structure. With such detailed knowledge of structure, our ultimate aim is to assess whether our chemical synthesis method allows control over the atomic scale structure.