P106 CEEFAX 106 Sat 13 Feb 22:30/58       Labour MP Mr Tony Benn has delivered another savage attack on his party's leadership. He openly accused Labour leader Mr Neil Kinnock of abandoning the party's historic mission to transform society. Mr Benn told a rally in Sheffield that the leadership was trying to get the party to go further to the right. He said it was limiting the party's policies to working out how best to administer the present economic system, as established bz Mrs Thatcher. News index 102/202 Newsreel 119/219