British private equity firm Exponent is in exclusive talks to acquire a controlling stake in Northern Ireland’s biggest private hospital group, which also owns a hospital in Sligo, called the Kingsbridge Healthcare Group. The price being paid for the group, which has four hospitals and 11 clinical facilities, is around £300 million (€347 million). PwC in London was appointed to sell the thriving hospital group last year, as first reported by The Currency in October.  Kingsbridge attracted significant interest from private equity investors and from trade players. Among the parties who expressed an interest in acquiring the well-run hospital group…