IGI Group could be sold within days to US insurer Amtrust Group after months of negotiations.
According to a source close to the company, the sale could be completed "any time now", as meetings continued this week.
If completed, Nasdaq-listed Amtrust, the multinational property and casualty insurer, will be the third company to take control of the UK commercial specialist in the past 15 months.
Following major shareholder investment by Iceland's leading insurance company Vátryggingafélag Íslands hf (VÍS) last year, IGI managing director Keith Wardell said he expected the UK insurer to grow its current gross written premium to £100m by 2009.
IGI refused to comment.