Deep Eutectic Solvents (DES) are molecular mixtures similar to ionic liquids, having melting points below room temperature. However instead of being composed of a salt, the mixture contains two molecules with strong interactions that hinder formation of an ordered crystalline network. DES share many of the features of ionic liquids which make them interesting as green solvents while being far less toxic than typical ionic liquids. Recently it has been found that small molecules commonly found in plant cells form natural DES, and it is speculated that these play a role in protecting cells from extreme conditions of cold or drought. Interestingly some of these DES can contain water in a form which currently it is unknown as to why it is inaccessible to enzyme reactions. We will use quasi-elastic neutron scattering to examine the behaviour of this water and relate it to enzyme activity.