Chelsfield Partners is one of a number of interested parties that are believed to have approached the private property fund.
A spokesman for St James Capital said: "We’re talking to a number of different parties, all of who share our vision for the business, but there are three potential options. One is a sale, another is a joint venture with a strategic partner and the third is a refinancing."
Property entrepreneurs Anthony Lyons, David Coffer and Simon Conway, who run St James Capital, bought the Earls Court and Olympia venues for us$ 484 million. The sites have been up for sale for around 18 months.