Tony Blair confessed today that he was useless at science at school.

The Prime Minister admitted the subject was his worst while at exclusive Fettes College in Edinburgh.

Mr Blair made the admission when he officially opened a multimillion-pound science centre at a school in County Durham.

The Prime Minister told an audience at Framwellgate School in Durham City: ''It is just interesting how science teaching has changed so much.

''I have to admit that science was not my best subject - in fact, it was my worst subject.

''I just didn't understand it.''