A legal action over the collapse of plans to redevelop the Chelsea Barracks site in London could see Prince Charles called in as a High Court witness.
The action was launched by property developers the Candy brothers against the Qatari royal family over the crumbling of the deal.
Reports state brothers Nick and Christian Candy claim the Qatari royal family withdrew their planning application as a result of direct intervention by Prince Charles.
The Prince had previously criticised the £3 billion scheme, designed by Lord Rogers and backed by the Candys.
Through Christian Candy’s CPC Group, the brothers are accusing Qatari Diar, the state’s property investment company, of breaching a contract with them when it pulled out of the scheme in June 2008 - a week before the application was due to go before Westminster council’s planning committee.
A Clarence House spokesperson would not comment, but said there was no contractual relationship between Prince Charles and his office with anyone else and therefore they were not party to any legal dispute. CPC also declined to comment.
The last time a royal witness appeared in court was in 1890, when the future Edward VII gave evidence in a gambling case.