** Shares of British insurer Hiscox HSX.L rise as much as 15% to a record 18.9 pounds ($25.22)
** Stock is the top gainer on FTSE 100 .FTSE, which has slid 2%
** Canada-based Intact Financial Corp IFC.TO is exploring a potential bid for Hiscox as it tries to build out its commercial lines business, Insurance Post reported citing sources; Reuters couldn't verify the report
** YTD, HSX up ~33% vs. FTSE up ~2%
($1 = 0.7493 pounds)
(Reporting by Nithyashree R B in Bengaluru)
((NithyashreeRB@thomsonreuters.com))