The properties of fluids confined to nanoscale films or pores can be very different to their bulk behaviour. This has important and wide-ranging consequences; from the role of trapped water and ions in biological complexes to the cycling of ions in and out nanoporous electrodes in batteries.  We investigate this using simplified (‘model’) experiments, using a Surface Force Balance (SFB), to look directly at the structure and dynamic properties of fluids confined to films of just a few molecular layers in thickness.