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An RAF captain has said he is "absolutely confident" there will be no civilian casualties as air strikes were launched over Syria.
Captain Richard Davies, of RAF Marham in Norfolk said: "In over 400 air strikes that the RAF has carried out in Iraq, we have had absolutely no civilian casualties reported.
The rules of engagement that our crews apply both in the air and by the commanders on the ground mean that I am absolutely confident that that will continue to be the case with operations in Syria."
Tornado fighter bombers have been attacking IS targets in Iraq since September last year when MPs gave the green light for air strikes.
Captain Davies's comments follow a warning by Labour leader Jeremy Corbyn in the lead-up to last night's vote that the move would "almost inevitably lead to the deaths of innocents".
The MOD has confirmed its Tornado jets have launched their first bombing raids in Syria.
A Ministry Of Defence spokesman confirmed RAF Tornados had returned from their "first offensive operation over Syria and have conducted strikes".
Two more jets from RAF Marham in Norfolk have joined the action this morning.
See RAF video of Tornado jets leaving Cyprus on bombing mission:
Two more Tornado jets have left RAF Marham this morning for Cyprus.
They'll join those from the base already at RAF Akrotiri.
Tornado fighter bombers have been attacking IS targets in Iraq since September last year when MPs gave the green light for air strikes last night.
An oilfield in eastern Syria was the target of overnight RAF airstrikes, the Defence Secretary, has confirmed.
Latest ITV News reports
Three of the region's Conservative MPs voted against air strikes in Syria although the vast majority were in favour.