P403ORACLE 403 Mon 3 Mar C4 1704:08    Countdown, 4.30pm - 5.00pm Richard Whiteley beams through another edition in the current series of the popular words and numbers game. Today's new contestant is Steve Lang from Stapleford in Nottingham - he'll be trying to prove a formidable opponent for the current champion. Gyles Brandeth is firmly esconced in the Dictionary corner checking that all the answers are above board.  Mini-Magazines Index...440 