British MPs voted in favour of the bill , 400 - 175 . To become law , it has to clear more hurdles , including a vote in the House of Lords . The latter are in a coalition government with the Conservatives . Prime Minister David Cameron faces revolt within his own Conservative Party on the issue .
British MPs voted in favour of the bill , 400 - 175 . To become law , it has to clear more hurdles , including a vote in the House of Lords . Prime Minister David Cameron faces revolt within his own Conservative Party on the issue .