UK's Big Technologies slumps after suspending CEO
** Shares of Big Technologies BIGB.L fall 22.9% to 81p ** The monitoring services provider suspends CEO Sara Murray following investigations into Murray's conduct ** Daren Morris, the current CFO of the company, to assume the role of interim CEO ** BIGB fell about 40% YTD (Reporting by Yamini Kalia in Bengaluru) ((Yamini.Kalia@thomsonreuters.com;))