The Highgate multimillionaire boss of online supermarket Ocado and his ex-wife faced each other across a courtroom, as they began one of Britain’s biggest ever divorce battles.

Ham & High: Belinda Steiner leaves The Royal Courts of Justice where she is embroiled in a High Court fight over money with her estranged husband Tim, Ocado chief executive.Belinda Steiner leaves The Royal Courts of Justice where she is embroiled in a High Court fight over money with her estranged husband Tim, Ocado chief executive. (Image: PA/Press Association Images)

Ocado boss Tim Steiner, 46, who is reportedly worth around £100 million, separated from the mother of his four children Belinda Steiner, 45, following more than 14 years of marriage.

The couple who enjoyed a £15million former marital mansion in Highgate, North London, were married in 1999 at Hampstead Garden Suburb Synagogue in North West London, long before Ocado ever existed.

Mr Steiner, who was faithful to his wife until their marriage collapsed, was last year pictured walking hand-in-hand with his new girlfriend, Polish model Patrycja Pyka, who is almost 20 years his junior.

The tycoon has filed for divorce from wife Belinda and the legal wrangles between the former couple began in earnest on the first day of their High Court battle.

Mr Steiner arrived at court with leading divorce lawyer Fiona Shackleton - who represented Sir Paul McCartney in his bitter split from Heather Mills - sheltering him from rain with her umbrella.

Top family judge, Mr Justice Bodey, today ordered - whilst it can be reported that the court fight has begun - details of the hearing must be kept secret until he delivers his ruling.

The tycoon went to Haberdashers’ Aske’s school in Elstree, Hertfordshire, before reading economics, finance and accountancy at Manchester University.

He worked as a bond trader for Goldman Sachs in London, New York and Hong Kong for eight years before quitting to launch Ocado in 2000.

As well as the Highgate mansion, the Steiners enjoyed a holiday chalet in the Three Valleys in France, where the family used to spend long weekends and holidays skiing.

Mrs Steiner formerly worked in PR.

The High Court hearing continues.