MPs will vote this afternoon on whether to legalise assisted dying in a potentially historic moment for the country.

The House of Commons backed the Terminally Ill Adults (End of Life) Bill in principle last November, by 330 votes to 275, a majority of 55.

Dozens of hours of scrutiny have followed, with numerous amendments made, and MPs will now decide if they want to give the Bill its third reading - the final major hurdle all legislation must clear before it heads to the House of Lords for further consideration.

If the Bill is voted through by MPs today it will almost certainly ensure assisted dying is introduced, with the upper House unlikely to stand in the way of a decision made by the democratically-elected chamber.

But if the Bill is voted down, its passage through the Houses of Parliament will be over and the issue will likely be parked for a generation.