P520ORACLE 520 Mon20 Jan C4 1712:50       Monday     GEC's £1.2bn Plessey bid referred 521 Westland move to resolve stalemate 523 Output rises to six-year high 524 TSB surplus up 10% to £170m 527 Distillers backs £2bn Guinness bid 529 News from 'Building' magazine 526  City headlines 500  FINANCIAL ADVERTISERS see 572