Formerly the preserve of the American wealthy, these agreements have now been given approval from the Supreme Court in the recent decision of Radmacher v Granatino (October 2010).
There is still no statutory provision upholding such arrangements but they are gaining ground and their terms will, in certain circumstances, be upheld by the court in deciding any subsequent claim made.
It is vital that both sides assets and income are considered before they commit themselves.
Such agreements may be difficult to negotiate as effectively one tries to cater for all scenarios that may evolve in the future of the relationship.
They cannot be rushed and ideally ought to be in place before the wedding is planned.