BRITISH, FRENCH MINISTERS DISCUSS PUBLIC SPENDING French Finance Minister Edouard Balladur discussed the need to control public spending in talks here today with British Chancellor of the Exchequer Nigel Lawson, a Treasury spokesman said. The spokesman said the ministers reviewed their economies, and public spending, domestic and European Community-wide. He declined to comment on whether the subject of concerted action to shore up the dollar had arisen. The U.S. Currency dipped sharply earlier this week after a month of relative stability after an agreement by six major industrialised nations in Paris on February 22 to stabilise their currencies.