Prevention of Future Deaths reports · 2025

Joshua Leatham-Prosser

Regulation 28 report to prevent future deaths, reference 2025-0110, written 27 Feb 2025. A coroner writes one of these when an inquest reveals a risk that could cause further deaths unless something changes.

Date of report27 Feb 2025
Reference2025-0110
DeceasedJoshua Leatham-Prosser
CoronerRichard Middleton
Coroner areaDorset
CategoryAlcohol, drug and medication related deaths
Sourcejudiciary.uk record · original PDF
Responses published1

The report

Text recovered by OCR from a scanned PDF. OCR is imperfect: check anything you rely on against the source PDF. Reproduced verbatim, including the scan's own layout.

REGULATION 28: REPORT TO PREVENT FUTURE DEATHS (1)

NOTE: This form is to be used after an inquest.

REGULATION 28 REPORT TO PREVENT FUTURE DEATHS
THIS REPORT IS BEING SENT TO:

1. The Home Secretary

1 | CORONER

Tam Richard T Middleton, Assistant Coroner, for the Coroner Area of Dorset

2 | CORONER’S LEGAL POWERS

I make this report under paragraph 7, Schedule 5, of the Coroners and Justice
Act 2009 and regulations 28 and 29 of the Coroners (Investigations) Regulations
2013.

3 | INVESTIGATION and INQUEST

On the 13" June 2024, an investigation was commenced into the death of
Joshua William Leatham-Prosser, born on the 5" March 1998.

The investigation concluded at the end of the Inquest on the 20" February
2025.

The Medical Cause of Death was:

1 (a) Urinary Sepsis
(b) Severe acute on chronic cystitis and pyelonephritis
(c) Chronic ketamine use

The conclusion of the Inquest recorded

Drug Related Death

4 | CIRCUMSTANCES OF THE DEATH

Mr Leatham-Prosser had started misusing ketamine in 2019. He developed
bladder problems and significant pain which then led to self medicating with
ketamine for pain relief. In October 2022 he fell under the care of the urology
team at University College Hospital London where he was offered surgery in
October 2024. On 5/6/24, following concerns for his welfare, Mr Leatham-
Prosser was found unresponsive in the hallway of his home address by
paramedics. He was pronounced dead at the scene. Dorset Police investigated
and found no evidence of third party involvement.

RONER'S CONCERNS

The MATTERS OF CONCERN are as follows:
1. During the inquest evidence was heard that:

i. Mr Leatham-Prosser had started taking Cannabis as a young
teenager and at the age of 17 progressed on to taking ketamine.
He did not perceive this to be any more harmful than cannabis.

ii. |The evidence before the inquest was that ketamine was a highly
addictive drug.

iii. Ketamine cystitis is an emerging epidemic in the younger
population with access to this drug seemingly easy to acquire.
The extremely harmful effect of this drug on the bladder is akin
to acid attacks on the skin.

iv. Patients seen by urologists are abusing the drug to the extent
required to damage the urinary tract to the point of requiring
major reconstructive surgery. The only way patients know how to
relieve their symptoms is with ongoing ketamine use. A vicious
cycle develops worsening the urological condition and reinforces
dependence on the drug with high rates of relapse.

2. I have concerns with regard to the following:

i. The highly addictive and harmful nature of a drug with a
classification of Class B.

ii The increasing number of young people presenting with
potentially fatal health problems linked to its use.

ACTION SHOULD BE TAKEN

In my opinion urgent action should be taken to prevent future deaths and I
believe you and/or your organisation have the power to take such action.

YOUR RESPONSE

You are under a duty to respond to this report within 56 days of the date of this
report, namely by 24 April 2025. I, the coroner, may extend the period.

Your response must contain details of action taken or proposed to be taken,
setting out the timetable for action. Otherwise you must explain why no action
is proposed.

COPIES and PUBLICATION

I have sent a copy of my report to the Chief Coroner and to the following
Interested Persons:

(1) Mr Leatham-Prosser’s family

I am also under a duty to send the Chief Coroner a copy of your response.

The Chief Coroner may publish either or both in a complete or redacted or
summary form. He may send a copy of this report to any person who he
believes may find it useful or of interest. You may make representations to me,
the coroner, at the time of your response, about the release or the publication
of your response by the Chief Coroner.

Dated Signed

A LA ne 4, ALA

27* February 2025 7

\
NO

Richard T Middleton

Responses

1 response published against this report on judiciary.uk. A response is a body's written reply to the coroner's concerns; publication is at the discretion of the Chief Coroner's office, so an absent response does not mean nobody replied.

Response from The Home Office (PDF)
wd
So
inister of State for Policing, Fire

Home Office and Crime Prevention
2 Marsham Street
London SW1P 4DF
www.gov.uk/home-office

Mr Richard T Middleton
Assistant Coroner
Dorset Coroners

DECS Reference:
Your Reference:

25 March 2025

INQUEST INTO THE DEATH OF JOSHUA WILLIAM LEATHAM-PROSSER:
REGULATION 28 REPORT

Dear Mr Middleton,

Thank you for your Regulation 28: Prevention of Future Deaths report of 27 February to
the Home Secretary about the death of Mr Joshua William Leatham-Prosser, which you
have linked to chronic ketamine use. You suggest that urgent action should be taken to
prevent future deaths from ketamine. | am replying as the Minister of State for Policing,
Fire and Crime Prevention.

Firstly, any death related to drugs is a tragedy, and | was very sorry to read about the
circumstances of Mr Leatham-Prosser’s death.

| have noted that the inquest found that Mr Leatham-Prosser had used cannabis, which is
controlled as a Class B drug under the Misuse of Drugs Act 1971 (‘the 1971 Act”), asa
young teenager; then, he began to use ketamine, which is also controlled as a Class B
under the 1971 Act, under the impression that it was no more harmful than cannabis.
Further, the inquest heard that ketamine cystitis is emerging within younger populations,
and that ketamine misuse can result in major reconstructive surgery. Also, | note your
concerns about ketamine’s current classification as a Class B — given its addictiveness
and potential of harm — and how an increasing number of young people are misusing the
drug and are subsequently subject to potentially fatal health problems.

| am very aware that ketamine can cause significant harm when misused, and this
Government is concerned that the harms — including its degree of addictiveness and the
possibility of irreversible bladder damage — may be significantly underestimated by those
who use the drug. Itis also particularly worrying that the misuse of ketamine amongst
young people has grown in recent times. Through the Government’s Plan for Change and
mission to make our streets safer, we will continue to work closely with health, policing and
wider public services to drive down drug use and its associated harms. Also, the Home
Office will continue to work with our partners to discourage drug misuse and to alert
people, particularly young people, about the dangers of ketamine.

As you may be aware, the Government is required to consider the advice of the Advisory
Council on the Misuse of Drugs (“ACMD”) before making any changes to the classification
of a controlled drug. | should also like to inform you that | wrote to the Chair of the ACMD,
Professor Owen Bowden-Jones, to formally commission an updated harms assessment of
ketamine on 14 January. The ACMD is independent of the Government, but | have full
confidence that it will consider the issue with due care and provide valuable advice. The
Government will carefully consider the ACMD’s recommendations before making any
decision on how to proceed.

Thank you again for your letter and for bringing this matter to my attention.

Yours sincerely,

Minister of State for Policing, Fire and Crime Prevention

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