Opponents of assisted dying have vowed to keep fighting after MPs narrowly voted today to legalise help for people to take their own lives.

The Commons backed one of the most far-reaching changes to the law on suicide in decades despite warnings that the legislation as it stands is unsafe.

But Kim Leadbeaters' Terminally Ill Adults (End of Life) Bill, which was passed by a majority of just 23 votes this afternoon, still has to clear the House of Lords before becoming law.

Critics of the change pointed out that fewer than half of MPs voted in favour and said peers should now seek to block it or slow down its passage so more major changes can be made.

Under the legislation terminally ill people in England and Wales diagnosed with less than six months to live will be allowed to seek medical help to die.