P527ORACLE 527 Mon13 Jan C4 1718:08   PLESSEY COUNTER─  BLAST AT GEC BID Telecommunications group Plessey has issued a strong counter attack against near-£1,200m takeover bidderu GEC. Plessey says GEC is a "conglomerate with a poor record in developing high technology risk business". Chairman Sir John Clark condemned the offer as "derisory! and said his group had consistently outperfgrmed GEC over the past five years. GEC's "unsupportable" claims were based on management logic which was "to put it mildly, misinfgrmed", he said. City Headlines 500 Newsfile 520 * HOLIDAYS GALORE! * 580