An understanding of the electronic structure of the actinide elements is one of the most intriguing and complex topics in contemporary chemistry. In particular the magnetic properties of uranium, the heaviest element that can be used in normal laboratories, are difficult to understand as crystal field splittings are of the same order as spin orbit couplings. Despite many reports in the literature over the past 7 decades this is still a hot topic. Here we aim to rationalise the anomalous low temperature magnetism of A4[U(NCS)8] (A = Et4N; Cs) whereby the low temperature magnetic moment is significantly different. In order to probe the low energy exciited states we will use Inelastic Neutron Scattering to directly measure these; this would be one of the very few such studies on any uranium compound.