This proposal sets out to investigate the high pressure behaviour of the double perovskitematerial with the chemical formula La2NiMnO6. The properties of this and related materialsmake them suitable for electronic components and a knowledge of the atomic structureallows us to understand the electronic properties of the materials and learn how to synthesise new materials with technological applications. We will investigate how the atom in the material re-orient themselves relative to each other at high pressure and relate this to other physical properties.