One of Germany’s wealthiest women is seeking to enforce a pre-nuptial agreement that would leave her former investment banker husband with nothing in the latest landmark divorce case to hit British courts.

Katrin Radmacher, a paper industry heiress worth an estimated £100m, claims that her estranged spouse is trying to renege on a deal made before they married in London in 1998, in which he agreed not to make a claim against her in the event of a separation.