P228 ORACLE 228 Sun15 Mar ITV 2140:00   FOREIGN   EXCHANGES   AT CLOSE Trading was thin and nervous and the pound ended the week 10 points down on Thursday's close at $2.2185. Its trade-weighted index ended unchanged on the day at 99.1N The pound and dollar both declined against Continental currencies. The dollar fell against the Swiss franc from 1.9370 to 1.9270 and against the mark from 2.1120 to 2.1105N It was also slightly down on the yen at 207.45 from 207.50. FO DHGNEXCHANGES 