UK's Mitchells & Butlers gains on quarterly sales rise, upbeat forecast
** Shares of British pub and restaurant operator Mitchells & Butlers MAB.L up 6.4% at 307.2p; top gainer on FTSE mid-cap .FTMC index ** Co posts 5% rise in Q3 like-for-like sales, helped by early summer driving footfall to its chain outlets ** Sees annual results to be at the top end of market expectations ** Including session moves, stock up 25.3% YTD (Reporting by Subiksha S in Bengaluru) ((Subiksha.S@thomsonreuters.com))