U.K. REVISES RETAIL PRICE INDEX FROM FEBRUARY The U.K. Government tomorrow will release the first of its Retail Price Index (RPI) figures calculated on a revised group of components and rebased on January 1987, as previously announced, the Employment Department said. The index, Britain's measure of inflation, is for February. Earlier data will not be revised as there are no equivalent figures including the new components, a spokesman said. Previously, the RPI base was January, 1974. Market forecasts centre on a 0.4-0.5 pct monthly rise in February and a year on year rate about 4.0 pct. The government forecasts annual inflation will be 4.0 pct at the end of 1987.