Since the 1967 Abortion Act, the law has been changed twice but the criteria have remained the same

• Ministers speaking out against assisted dying ‘are giving false impression’, says peer

“It is entirely possible that future generations will puzzle over how such a fundamental right could ever be denied to them.” These are the words of David Steel, the veteran former leader of the Liberal party and a Westminster MP for more than three decades, referring to this Friday’s historic vote in parliament on whether to legalise assisted dying.

But Steel could just as well have been referring to a private member’s bill he brought before parliament 57 years ago that was also about the right to bodily autonomy and was the subject of fierce debate and vocal opposition from church leaders.