Bell Atlantic Corp and GEC Plc were at the head of the list of candidates for the identity of the mystery bidder for Atlantic Computers Plc. Atlantic asked for trading in its shares to be suspended yesterday morning pending announcement of the outcome of discussions about its agreed acquisition that were in an advanced stage, and the company later said that an announcement would be made today. Other companies tipped as possible candidates included BellSouth Corp, Inspectorate International AG and Lex. See also page three inside.