There is currly great interest in the use of neutron reflection to study model bilayers. We have produced a model membrane system that is strongly associated with the substrate, but separated from it by a hydration layer, so that the bilayer is not adversely affected by frictional effects. This so called 'free supported bilayer' (FSB) bilayer is fabricated on a Silicon substrate, and there have been several enquiries from the ISIS user community about the posibillity of fabricating FSB's on gold. The Silicon system is anchored by a SAM made using trimethoxysilanes. To use the same system on Au, we propose replacing the silane with a thiol. We will fabricate the FSB on an Au layer, with an Fe layer between the Au and the substrate. This will allow the system to be studied at two contrasts using polarised neutrons without the need to exchange the solvent.