P428ORACLE 428 Mon23 Dec C4 9716:58    Monday, December 23, 8.00pm Time to take a peek behind the net curtains in Britain's most popular housing estate, The Close, where everyone's getting ready fgr Christmas. Sheila takes Claire to see a Father Christmas who seems to know an awful lot about the Grants. Barry returns home for Christmas but refuses to talk about the girl who keeps calling him. Billy decides to work over Christmas and Ralph invites Julia to spend New Year's Eve with him.  Full synopsis is on page 418 