Do I need a Prenuptial agreement?

If you aren't a Hollywood celeb or a member of aristocracy, do I need a prenup?
What happens if I have set up a thriving business before I met my partner or have other assets that I want to protect?
The content of a prenuptial agreement can vary widely, but commonly includes provisions for the division of property and support in the event of a divorce or separation. They may also include terms for dividing of assets as a result of divorce on the grounds of adultery, as well as custody arrangements if children are involved.
Prenuptial agreements have historically not been considered legally valid in England. This is still generally the case, although a 2010 Supreme court test case between the German heiress Katrin Radmacher and Nicolas Granatino, indicated that such agreements can "in the right case" have decisive weight in a divorce settlement.
So, if you are going to look into setting up a Prenuptial agreement each person must have sought independent legal advice for any court to consider its contents.