The recent explosion of research into magnetic multilayers (MM) has been largely due to the discovery of giant magneto resistance and the associated spin transfer torque effects in these materials, yielding to their rapidly incorporation to technological and more specifically data storage applications. In this proposal we aim to use polarised neutron reflectometry to study magnetically coupled bilayers in detail how (i) the interface anisotropy affects a magnetically coupled a bilayer system and in particular the transfer of anisotropy from one layer to the next (ii) whether the thickness of the constituent layers has a significant effect on the non-uniform precession (ferromagnetic resonance), predicted to occur in one of the layers, can be modified through the thickness of the constituent layers.