P212 CEEFAX 212 Tue 19 Jun 21:13/45       Mr Alistair Graham, moderate leader of 'hitehall's largest union, the Civil and Public Services Association, has lost his seat on the TUC. He was toppled from the general council tonight by a communist, Mr Ray Aldjrson The union's new nominee will take his place in the council after the TUC congress at Brighton in Sjptembjr. By tradition the union has been represented by its general secretary, but Mr Graham has aroused opposition because of the moderate role he has taken. News index 102/202 Newsreel 119/219