MPs will be called in alphabetical order to collect their ballot papers, which are stamped, and their names crossed out.

They will then place their vote in one of four booths and place it in one of two boxes.

There will be three options on the ballot paper: Yes, No or Abstain.

The Speaker will ask that ballot boxes are closed and sealed when each MP has finished voting.

A representative from each party will then be called to witness the count. The counting room will be guarded by the Sergeant-in-Arms, under supervision of the party representatives and Speaker.

Finally, the bell will be rung and the speaker will announce the results in the chamber.