Prime Minister David Cameron has said MPs took the "right decision to keep the UK safe" after they overwhelmingly backed air strikes against Islamic State in Syria.
RAF jets and drones are poised to carry out air strikes on the jihadist terror group within hours.
MPs voted by 397 to 223 in favour of extending British action to quash IS from Iraq into its Syrian strongholds - a majority of 174.
Some 66 Labour MPs voted with the government while seven Conservatives opposed the plans for military action.
Mr Cameron said: "I believe the House has taken the right decision to keep the UK safe - military action in Syria as one part of a broader strategy."