Terminally Ill Adults (End of Life) Bill

Debate between Lord Bishop of Leicester and Lord Sandhurst

Friday 5th December 2025 Lords Chamber

[Lord Sandhurst (Con)]

My Lords, I rise with some caution, because these are deep waters. I think we should err on the side of caution. I support the noble Baroness, Lady Berger, because this is an entirely new process. Assuming the Bill comes into force in some form, the age can always be lowered in the light of experience; by experience, I mean that of the human brain and how people are considering these things.

What has prompted me to say this in particular is the report in the Times on 25 November of the study by Cambridge’s MRC Cognition and Brain Sciences Unit, which compared the brains of 3,802 people aged between zero and 90 years, using datasets of MRI diffusion scans, which map neural connections by tracking how water molecules move through the brain tissues. Very simply, this study found that the topology of the childhood brain runs from birth until the turning point at the age of nine, and then it transitions into the adolescent phase, an era that it found—this is completely dispassionate—lasts right up to the age of 32 on average. Our early 30s see the brain’s neural wiring shift into the adult mode, and I emphasise that phrase: adult mode. This is the longest era and lasts over three decades. A third turning point, around the age of 66, marks the start of an early ageing phase and, for those of us who are a bit older, the late ageing brain takes shape at around 83 years old.

I conclude by reading from the report:

“While puberty offers a clear start, the end of adolescence is much harder to pin down scientifically. Based purely on neural architecture, we found that adolescent-like changes in brain structure end around the early thirties”.


If that is the architecture, at this stage in the Bill we should be looking at 25 and not a younger age.

[The Lord Bishop of Leicester]

My Lords, I too rise to support this amendment with some caution, noting that these are deep waters. I hope that noble Lords will forgive me for pointing out the blindingly obvious: as I look around your Lordships’ Committee, I do not see any 18 to 25 year-olds on these Benches, and the voices of children and young people are vital in such a debate.

The role of Children’s Commissioner was created to ensure that the voices of children and young people were heard within your Lordships’ House and the other place. Therefore, when the Children’s Commissioner, whom I know personally, who has visited my diocese and whom I have seen at work listening to children and young people—she and her staff are superbly skilled at that work—urges us to be cautious, I believe we should listen. I therefore urge consideration of that note of caution.