Why he matters in this case
Sir David Davis’s November 2024 Commons adjournment debate is a constitutionally important document. It is the first occasion on which a senior parliamentarian — former Cabinet Minister, former Shadow Home Secretary, sitting Privy Counsellor — put the Letby conviction-safety question on the UK parliamentary record. The debate did not compel the Government to act but it placed the evidential concerns beyond deniability. Once they are in Hansard, they are in Hansard.
His intervention also matters because of who he is. He is not a campaigner by trade. He is a Conservative backbencher with a decades-long civil-liberties track record — habeas corpus, surveillance oversight, extraordinary rendition, the Post Office Horizon scandal. His pattern is to identify miscarriage-of-justice cases at the point where the evidence has shifted but the public record has not caught up. The Letby intervention fits that pattern.
Political and professional background
- Member of Parliament for Goole and Pocklington since 2024; previously for Haltemprice and Howden from 1987.
- Former Secretary of State for Exiting the European Union (2016–2018) under Theresa May.
- Former Shadow Home Secretary; former Minister of State for Europe; former Minister for Public Service.
- Resigned his seat in 2008 to force a by-election on civil-liberties grounds (the 42-day detention proposal).
- Long-standing interventions on miscarriage-of-justice cases including the Post Office Horizon scandal (several years before the mainstream media attention that followed the ITV dramatisation).
What he said in the November 2024 adjournment debate
Davis used his Commons time to set out the structural evidential concerns in sequence: the air-embolism theory against Dr Shoo Lee’s own paper; the insulin-assay methodology against the clinical-biochemistry consensus; the shift-rota chart against the Royal Statistical Society’s post-Sally-Clark framework; and the pattern of institutional delay at the Countess of Chester. He concluded that on the face of the evidence the convictions required review by the Criminal Cases Review Commission.
For a fuller account, see our transcript summary and Hansard for the debate itself.
Subsequent interventions
Since November 2024 Davis has continued to speak about the case in parliamentary questions, in select committee correspondence, and in broadcast interviews. His position has been consistent: he is not claiming to know what happened on the neonatal unit; he is claiming that the evidence put to the jury was not what a post-Sally-Clark criminal justice system should be convicting on, and that the CCRC is the right body to examine the question.
Why this matters for a lay reader
The contribution of a senior parliamentarian with decades of criminal-justice oversight experience is different in kind from expert or journalistic commentary. It tells the public that the question has reached the floor of the House. A conviction that is questioned in Hansard by a former Cabinet Minister cannot be “settled” in the way a post-trial conviction is usually considered to be.