** Shares of Wagamama owner Restaurant Group RTN.L jump
37% to 63.3p; top gainer across London stocks
** RTN says Apollo Global APO.N -owned and managed vehicle
to acquire co for 506 million pounds ($623.80 million) in cash
** Under terms of the deal, co's shareholders will get 65
pence for each share held, which represents a premium of about
34% to stock's last closing price
** Apollo says it believes development of co will be best
served as a private business, with access to capital and the
benefit of a long-term investment approach
** As of last close, stock had risen 106.46% YTD
($1 = 0.8112 pounds)
(Reporting by Zainab Saifuddin Saifee in Bengaluru)
((Zainab.SaifuddinSaifee@thomsonreuters.com; +91 8766460080;))