David Cameron has accused Jeremy Corbyn of "hating" Britain in his most outspoken attack yet on the new Labour leader. The prime minister delivered a direct warning about the threat posed by his opposition rival in his speech to the Conservative Party Conference in Manchester.

Corbyn faced strong criticism during the Labour leadership campaign over comments he made after the 2011 killing of the al-Qaida chief by US Special Forces, saying it was a "tragedy" that he had been assassinated rather than put on trial.

"And on the subject of protecting our country from terrorism, let me just say this: Thousands of words have been written about the new Labour leader. But you only really need to know one thing − he thinks the death of Osama bin Laden was a "tragedy". No. A tragedy is nearly 3,000 people murdered one morning in New York. A tragedy is the mums and dads who never came home from work that day. A tragedy is people jumping from the towers after the planes hit," said Cameron at the Conservative Party Conference.

Cameron then went on to go so far as to describe Corbyn as "Britain-hating". "My friends, we cannot let that man inflict his security-threatening, terrorist-sympathising, Britain-hating ideology on the country we love.

"Another big judgement call to make is when a refugee crisis confronts our world. Like most people, I found it impossible to get the image of that poor Syrian boy Aylan Kurdi out of my mind. We know in our hearts our responsibilities to help those fleeing for their lives. But we know, too, that we must keep our heads. Let's start with a simple fact. Twelve million people have been made homeless by the conflict in Syria. And so far only 4% have come to Europe.

"If we opened the door to every refugee, our country would be overwhelmed. The best thing Britain can do is help neighbouring countries, the Syrian people and the refugees in the camps...and when we do take refugees, to take them from the region, rather than acting in a way that encourages more to make that dangerous journey," he added.