A High Court judge in London has dismissed an application by Paddy McKillen that details of his financial position should remain confidential and not be revealed in open court.
The Belfast-born developer is suing the Barclay brothers, owners of Telegraph newspapers, in a legal battle for control of three luxury London hotels.
Mr Justice David Richards said that the balance must come down in favour of the whole trial being heard in public and that there was a basic requirement for open justice.
In a lengthy judgment on the issue of disclosure, the judge referred to proceedings in Ireland which Mr McKillen had taken against NAMA.
In those proceedings, the judge noted, it had been disclosed that Mr McKillen and another party had over €100m in borrowings from Anglo Irish Bank.
Also in the proceedings it emerged that the former Irish hotel tycoon Derek Quinlan moved to Switzerland to escape writs and summonses being served on him, according to a NAMA document produced in the High Court in London today.
Mr Quinlan was giving evidence in proceedings brought by developer Paddy McKillen against the millionaire Barclay brothers, denied he moved to Switzerland in 2009 to escape creditors or because he was in dire financial straits.
He told the court he "had a cash flow challenge" and that he had moved from the UK "on the advice of KPMG"
Mr Quinlan and Mr McKillen sold London's Savoy hotel to Saudi investors in 2005 but retained Claridges, the Connaught and the Berkley Hotels.
But, despite the recession, the court heard that in 2009 Mr Quinlan's personal company, Quinlan Private, was still being paid €450,000 a year by Coroin, the company which controlled the three hotels and in which Mr McKillen was an investor.
Mr Quinlan said the money was for "strategic decisions" he was providing for Coroin.
Quinlan's written witness statement contains details of his financial rise and fall.
He described how in 2004 he had approached Riverdance creators Moya Doherty and John McColgan to become investors in the hotels.
He described them as some of his oldest friends but denied they were his business partners.
Mr Quinlan had also been invited to join Mr McKillen and members of U2 as investors in Dublin's Clarence Hotel.