Your wife will have some rights over the matrimonial home under the family law act 1996. It is often said by people who should know better that pre-nuptial agreements are of no value as they are not legally binding, which is a crude over simplification, which has been reflected by some recent court decisions, they are of value but must be correctly drawn up, and will probably be taken into account, but perhaps not slavishly. As long ago as 1997 both Mr Justice Cazalet & Wilson said pre-nuptial agreements could not be ignored.