David Cameron has paid tribute to Rowan Williams - who announced that he is resigning from his position as Archbishop of Canterbury - saying he was "a pleasure to work with".
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Run by the NSPCC the helpline allows employees in any sector to raise concerns anonymously.
PM used a speech in Hamburg to say that the UK will not 'pull up the drawbridge and retreat from the world' but Europe must change.
It is set to remain unsettled into Saturday, becoming drier on Sunday.