This experiment follows our ambient pressure characterisation of the Li intercalate of FeSe which is a superconductor with a Tc of 43 K. Li atoms, amide ions and ammonia molecules are intercalated between the FeSe layers and we will use data gathered on PEARL to investigate whether there are pressure-induced phase transitions, how the anisotropic structure responds to increasing pressure and whether there is any pressure-induced reorganisation of the intercalated species. The dependence of superconducting properties on applied pressure is a key part of the characterisation of new superconductors and the results of these experiments will be correlated with high pressure magnetometry and muon-spin rotation spectroscopy.