EDDIE, the Speaker DOES NOT vote with the Government in a tied vote.
The Speaker is free to vote in the same way as any other MP but by convention, he/she votes in the following way,
"Speaker Denison's rule is a constitutional convention established by John Evelyn Denison, who was Speaker of the British House of Commons from 1857 to 1872, regarding how the Speaker decides on his casting vote in the event of a tie.
The principle is to always vote in favour of further debate, or, where it has been earlier carried to have no further debate or in some specific instances, to vote in favour of the status quo. For example of the latter approach the Speaker will vote:
In favour of early readings of bills
Against amendments to bills
Against the final enactment of a bill
Against motions of no confidence
The thinking behind the rule is that change should only occur if an actual majority vote is in favour of change."