Chris Grayling, Sir Paul Beresford and Crispin Blunt have all said they will vote with the Government for air strikes against Isis in Syria this afternoon.

Conservative MPs are largely behind the Prime Minister with the vast majority reportedly set to vote yes.

Mr Blunt, the Reigate MP, will also speak in the debate before the vote expected to last until 10pm.

Last year MPs voted 524-43 in favour of air strikes in Iraq.

Mr Grayling said that the strikes were necessary because Isis pose a ‘serious threat to us and their neighbouring countries’.

The Conservative Epsom and Ewell MP said: "The important thing for people to understand is that this would just be an extension of what we’re already doing in Iraq.

"But as it is there’s an invisible line in the sand after which there are strategic bases, weapons and terrorists which we can’t bomb.

"It doesn’t make sense for me that we’re not part of the air strikes in Syria - especially after the terror attacks in Paris, Beirut and Ankara."

On the subject of an exit strategy, Mr Grayling said there would ‘simply be no peace in Syria with Isis there’.

The former justice secretary said: "We are fighting a group whose mission is to simply destroy what there is to destroy."

Conservative Mole Valley MP Sir Paul said he was voting with the Government, because Isis have been responsible for ‘hideous’ acts.

He said: "All the beheadings and taking people into slavery - not to mention terror attacks all over the world - means we need to take action."

Sir Paul refuted the idea that the indiscriminate nature of air attacks would be sufficient to oppose the motion.

He said: "The great advantage of our equipment is it’s very, very accurate.

"Yes, collateral damage does happen, but not often enough, in my view, to defeat the imperative to do something about Isis."

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