This is yet another case that highlights the importance of financial disclosure.
Ms Roocroft is arguing that her ex misled the Court as to what assets were available at the time they separated and the finances were split.
Initially she tried to overturn the financial judgment made in 2010 and wasn't allowed but she now has permission to bring her challenge before the Court of Appeal.
The hearing begins on 5 July 2016 at the Royal Courts of Justice and is listed for one and a half days.
Watch this space for developments.
Woman fighting for fair settlement after ex-partner hid £6m assets in business A woman who discovered that her civil partner, who died in 2013, appeared to have hidden assets worth millions of pounds in business assets during the dissolution of their relationship hopes to ask the Court of Appeal to set aside the original 'unfair' settlement.