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Lucy Letby's 'boyfriend' fought to save her career and put her 'first' after she murdered babies, damning emails show

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Pollard, C. (2026, September 15). Lucy Letby's 'boyfriend' fought to save her career and put her 'first' after she murdered babies, damning emails show. Daily Mail. https://www.dailymail.com/news/article-16133371/Damning-email-shows-married-father-Lucy-Letbys-boyfriend-duty-patients.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

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Daily Mail · collected 2026-09-15 · by Chris Pollard
Content note This article describes suicide or self-harm.

Quick Summary

A damning inquiry revealed that Mark Deakin, a doctor and former partner of convicted murderer Lucy Letby, forwarded confidential information to her during an investigation into deaths at the Countess of Chester Hospital. Between 2015 and 2016, Letby murdered seven babies and attempted to kill seven others. Dr Deakin exchanged over 1,350 messages with Letby and warned her about staff suspicions, blurring professional boundaries and prioritizing her interests above patient safety. Inquiry chairman Lady Justice Thirlwall criticized this behavior as a failure in duty to patients.
Written by AI on 2026-09-16, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

Lucy Letby, a nurse convicted of murdering seven babies and attempting to kill seven more at the Countess of Chester Hospital from June 2015 to June 2016, had an affair with Mark Deakin, a married father-of-two doctor who exchanged over 1,355 messages with her. An inquiry found that Dr Deakin forwarded confidential emails to Letby and shared details about staff suspicions of her behavior in an attempt to warn and support her. Despite being responsible for patient care, Dr Deakin prioritized his relationship with Letby, according to the chairman Lady Justice Thirlwall, who stated he "blurred boundaries" between his duty to patients and his desire to help Letby. The inquiry concluded that this conduct contributed to a failure in protecting babies at the hospital.

Written for “Lucy Letby Baby Murders Case” on 2026-10-30, grounded in this article and the 0 other(s) covering the same event.

Story

📰 Lucy Letby Baby Murders Case
Crime & Law · 1 article(s) covering the same event.

Compared with similar articles

This article reads unscored and hedges 7% of its claims. Each row says how that neighbour differs.
Daily Mail
⚖️ Leans strongly left Hedges 5 of 35 claims Outlet record 68/100
“The articles discuss different aspects of the aftermath following Lucy Letby's conviction for murdering babies, with one focusing on her 'boyfriend' doctor's actions and the other on hospital bosses' responses to whistleblowers.”
BBC News
Hedges 6 of 50 claims Outlet record 69/100
“The articles discuss different aspects of Lucy Letby's case, one focusing on her 'boyfriend' warning her about suspicious staff behavior and the other on plans to introduce baby ward cameras after an inquiry.”
BBC News
Hedges 2 of 25 claims Outlet record 69/100
“The articles discuss different aspects of the inquiry into Lucy Letby's case, with Article A focusing on emails between Letby and her 'boyfriend', while Article B discusses a senior doctor's reaction to the final inquiry report.”
Daily Mail
⚖️ Leans left Hedges 6 of 91 claims Outlet record 68/100
“Article A discusses systemic failures at Countess of Chester Hospital during a specific period, while Article B focuses on emails exchanged between Lucy Letby and her 'boyfriend' regarding suspicions about her behavior.”
The Guardian
Hedges 11 of 63 claims Outlet record 66/100
“The articles discuss related topics concerning Lucy Letby but describe different aspects of the ongoing inquiry—one focuses on potential preventable deaths due to hospital failures, while the other highlights emails exchanged between Letby and her 'boyfriend'.”
Evening Standard
Hedges 3 of 27 claims Outlet record 65/100
“Article A discusses the publication of a report from the Thirlwall Inquiry regarding Lucy Letby's crimes, while Article B focuses on evidence revealed during the inquiry about communications between Letby and her 'boyfriend'.”
Evening Standard
Hedges 1 of 15 claims Outlet record 65/100
“The articles cover different aspects of Lucy Letby's case: one focuses on her lawyer's response to experts quitting her defense team, while the other discusses a past email exchange between Letby and her 'boyfriend'.”
The Guardian
Hedges 6 of 33 claims Outlet record 66/100
“The articles cover different aspects of the ongoing inquiry into Lucy Letby's case - one focuses on potential lives that could have been saved if action was taken earlier, while the other discusses internal communications between Letby and her 'boyfriend' regarding suspicions about her behavior.”
Daily Mail
Hedges 13 of 109 claims Outlet record 68/100
“The articles discuss different aspects of the Lucy Letby case: one focuses on the recommendation for cot cameras following an inquiry, while the other details emails between Letby and her 'boyfriend' about staff suspicions.”
BBC News
Hedges 5 of 42 claims Outlet record 69/100
“Article A discusses the publication of findings from the public inquiry into Lucy Letby's crimes, while Article B focuses on evidence presented during the inquiry about a doctor who tried to warn her after staff meetings. These describe different aspects and events.”
How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted
27
sentences that state something as happening or true
Uncertain
7%
2 of 27 hedged ("reportedly", "may", "according to")
Leaning
not political
takes no side on a contested political question
Publisher signals
68/100
Daily Mail's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
1
Crime & Law
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-09-16 · source text last changed 2026-09-16 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Publisher

Daily Mail · 8421 article(s) · 20 correction(s) detected
Running correction rate · 20 correction(s)

Who wrote this

Chris Pollard
13 article(s) here · 1 carrying a prediction
🔮 Speaking to BBC Radio 4's Today programme, he said: 'If it turns out through the investigation ongoing in the Philippines and with the FBI that an individual is ultimately held to account for those offences, then there's seven years during which children will have potentially continued to suffer abuse.'
🔮 She added: 'He was like a peacock, women would always approach him.'
🔮 In a joint letter, they called on the Prime Minister to back a new law that would require online bots to identify who sent them and what they will do with the information they access.
🔮 'If you agree, it will be necessary to change the financial statements and the accounting records accordingly for 2003 and 2004,' the email said.
🔮 I would never ban things.
🔮 At 2.15am on Sunday, Belfast's Court of Appeal ruled it would not interfere with the decision.
🔮 One Year 8 girl told researchers: 'Since I got my new phone I don't want to come out my bedroom, and I've been more short-tempered and not feeling as energetic and active as I used to be.' Sports and outdoor hobbies have also been replaced with sedentary screen time. 'Half of teen girls said they avoid school sports because they worry they will not be good enough, compared with 38 per cent of boys.
🔮 In a letter to former pupils - known as Old King's Scholars (OKS) - headmistress Jude Lowson said the investigation will focus on the period from the 1950s to the late 1990s.
🔮 Transport Secretary Heidi Alexander said: 'I know this will be deeply frustrating for passengers after the previous issue.' Ryanair boss Neal McMahon said more than 25,000 passengers were affected and 140 of its flights delayed. 'Martin Rolfe has presided over repeated system failures, repeated passenger disruption and repeated failures to deliver an effective back-up system,' he said.
🔮 I would like the question to be asked about differentiation of contributions.
Also by Chris Pollard
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 13 articles by Chris Pollard →

Topics

Daily Mail the Countess of Chester Hospital the Daily Mail

Subjects

Letby PERSON · 12× Deakin PERSON · 11× Thirlwall PERSON · 4× Lucy Letby PERSON · 2× Mark Deakin PERSON · 2× the Countess of Chester Hospital ORG · 2× Alder Hey Children’s Hospital ORG · 1× Daily Mail ORG · 1× Stephen Brearey PERSON · 1× the Daily Mail ORG · 1×

Narrative

Married father-of-two Mark Deakin exchanged hundreds of messages with Lucy Letby and put her first over patients, the inquiry found Letby murdered seven babies and tried to murder seven others at the Countess of Chester Hospital between June 2015 and June 2016 Lady Justice Thirlwall was chairman of the inquiry into the deaths and found there had been a 'complete failure' to protect babies at the hospital Lady Justice Thirlwall disagreed that the incident was a 'collective failure', stating: 'It was a failure by the doctor who was responsible for caring for Baby L at the time, namely Dr [Deakin].' The following month, Dr Deakin attended a meeting about the deaths of two babies.
framing: assertive · carried by 1 article(s) · first seen 2026-09-16
🔮 He said the statement could 'include things we discussed yesterday that might not be in the notes' – a reference to Letby's involvement.

Claims (27 extracted, 2 hedged)

Lucy Letby's doctor 'boyfriend' put his concern for her above his duty to patients, the inquiry set up after her conviction has found. asserted
inquiry → put → conviction
Married father-of-two Mark Deakin forwarded a confidential email to the nurse in an apparent bid to warn her that staff had become suspicious of her behaviour. asserted
staff → forward → behaviour
Following a 2016 staff meeting about babies who had died or fallen ill under Letby's care, to which the neonatal nurse was not invited, Dr Deakin messaged her with details, writing: 'You need to keep this to yourself.' Dr Deakin, 53, who died earlier this year after being sacked for exchanging 1,355 messages with Letby, was named for the first time earlier this month after the Daily Mail applied for an anonymity order to be lifted. asserted
order → follow → time
Inquiry chairman Lady Justice Thirlwall said the doctor, who she named as Dr U, 'blurred boundaries' between his duty to his patients and his desire to help and support Letby, adding: 'He put her first.' The inquiry heard Dr Deakin was an experienced registrar at the Countess of Chester Hospital where Letby murdered seven babies and tried to murder seven others between June 2015 and June 2016. asserted
Letby → say → June
Dr Deakin said he supported Letby because she was struggling with her mental health and admitted that he shared too much clinical detail about patients, which he deemed inappropriate in hindsight. asserted
he → say → hindsight
He was involved in caring for two of Letby's victims as a night-shift registrar in June 2016. asserted
He → involve → June
Dr Deakin admitted that he failed to recognise the significance of high insulin levels in Baby L, a twin boy, after the nurse had injected him with an overdose of the medication. asserted
nurse → admit → medication
Married father-of-two Mark Deakin exchanged hundreds of messages with Lucy Letby and put her first over patients, the inquiry found Letby murdered seven babies and tried to murder seven others at the Countess of Chester Hospital between June 2015 and June 2016 Lady Justice Thirlwall was chairman of the inquiry into the deaths and found there had been a 'complete failure' to protect babies at the hospital Lady Justice Thirlwall disagreed that the incident was a 'collective failure', stating: 'It was a failure by the doctor who was responsible for caring for Baby L at the time, namely Dr [Deakin].' The following month, Dr Deakin attended a meeting about the deaths of two babies. asserted
Deakin → exchange → babies
Colleagues recalled that concerns about Letby were discussed, but Dr Deakin said he did not recall this and that he did not have any concerns about her. asserted
he → recall → her
Later, he messaged Letby – who had not been invited to the meeting – saying: 'You need to keep this to yourself. asserted
You → message → yourself
The meeting this afternoon looked at everything with Child O and P from birth onwards, reviewed everything, the room, beds, medical views and actions. asserted
meeting → look → everything
We looked at all documentation, medicine. asserted
We → look → documentation
'If you have any doubt about how good you are at your job stop now, documentation was perfect.' asserted
documentation → have → stop
The following day, Dr Stephen Brearey, the hospital's lead neonatal consultant, emailed Dr Deakin suggesting that he prepare an inquest statement while matters were fresh in his mind. asserted
matters → email → mind
He said the statement could 'include things we discussed yesterday that might not be in the notes' – a reference to Letby's involvement. uncertain
that → say → involvement
Dr Deakin forwarded the message directly to Letby, telling her: 'This email has to stay between us.' He told the inquiry that he had been trying to reassure her and 'give her some insight into what was going on', adding: 'In hindsight that was an error on my part... asserted
that → forward → part
I shouldn't have sent it.' asserted
I → send → it
Lady Justice Thirlwall called his actions 'most unwise', stating: 'It is another example of the blurring of boundaries... between his duties to his patients, and his desire to help and support a young nurse. asserted
It → call → nurse
He put her first.' asserted
He → put → her
The inquiry found Dr Deakin's support for Letby, 36, continued well into 2017 when he helped her to secure observational theatre placements at Alder Hey Children’s Hospital in Liverpool. asserted
her → find → Liverpool
He did not tell the hospital that she was no longer permitted to look after babies on the neonatal unit at the Countess of Chester Hospital. asserted
she → tell → Hospital
During his evidence to the inquiry, Dr Deakin said he had been 'misled and maybe manipulated'. asserted
he → say → inquiry
'I'm really sorry that things have come to end as they have,' he said. asserted
he → come → ?
'I have a lot of regrets about how that period of time took place.' asserted
period → have → place
During her criminal trial, Letby broke down in tears and tried to leave the dock when Dr Deakin entered the witness box and answered questions from behind a screen. asserted
Deakin → break → screen
The prosecution suggested it was because she didn't like hearing her 'boyfriend' give evidence, to which she replied: 'That's unfair.' uncertain
That → suggest → which
His name appeared repeatedly on scrawled notes found at Letby's home address after her arrest, including several references to 'love was all we needed'. asserted
we → appear → references
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