Cameron: UK faces same threat

David Cameron has made a statement at Downing Street, saying the threat from the so-called Islamic State is "evolving", and becoming more acute.  
"We in the UK face the same threat," he said.
"We will redouble our efforts to wipe out this poisonous extremist ideology."
In the light of last night's attacks, the UK will review its terror plans and attempt to learn from what happened in Paris, he said.
Mr Cameron called the attacks the "worst act of violence in France since World War Two".
He said Britain stands with France "shocked but resolute, in sorrow but unbowed".
"While full picture is still emerging, we must be prepared for a number of British casualties, and we will do whatever we can to help those in need."