** Shares of healthcare technology firm EMIS EMISG.L up
25% at 1,908p; highest in more than ten months
** Stock among top pct gainers across London
** Britain's Competition and Markets Authority
(CMA)provisionally clears UnitedHealth Group's UNH.N 1.24 bln
pound($1.58 bln) acquisition of EMIS
** CMA provisionally finds no competition concerns in the
deal
** If gains hold, EMIS is set to post biggest one-session
gain since June 2022
** As of last close, stock down 18.4% YTD
($1 = 0.7867 pounds)
(Reporting by Hani Kollathodi in Bengaluru)
((Hani.Kollathodi@thomsonreuters.com;))