Prevention of Future Deaths reports · 2025

Theo Treharne-Jones

Regulation 28 report to prevent future deaths, reference 2025-0521, written 16 Oct 2025. A coroner writes one of these when an inquest reveals a risk that could cause further deaths unless something changes.

Date of report16 Oct 2025
Reference2025-0521
DeceasedTheo Treharne-Jones
CoronerGavin Knox
Coroner areaSouth Wales Central
CategoryChild Death (from 2015) · Other related deaths · Wales prevention of future deaths reports (2019 onwards)
Sourcejudiciary.uk record · original PDF
Responses published2

The report

Text extracted from the PDF text layer. Reproduced verbatim, including the scan's own layout.

GRAEME HUGHES 

HIS MAJESTY’S 
SENIOR CORONER 

SOUTH WALES CENTRAL 
CORONER AREA 

ANNEX A 

CORONER’S OFFICE 

THE OLD COURTHOUSE 

COURTHOUSE STREET 

PONTYPRIDD 

CF37 1JW 

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: 

TUI UK Limited 

Association of British Travel Agents (ABTA) 

CORONER 

1 

2 

3 

I am Gavin Knox HM Coroner, for the coroner area of South Wales Central. 
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. 

INVESTIGATION and INQUEST 

Coroner’s Office, The Old Courthouse, Courthouse Street, Pontypridd, CF37 1JW 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 On 25 June 2019 I commenced an investigation into the death of Theo Phillip TREHARNE- 
JONES . The investigation concluded at the end of the inquest on 15 October 2025. The 
conclusion of the inquest was  Accident. 

1a Drowning 

1b 

1c 

II 

CIRCUMSTANCES OF THE DEATH 

These were recorded as :- 

4 

Theo Treharne-Jones died on 15 June 2019 by drowning in a swimming pool at The Holiday Village 
Atlantica, in Kos Greece where he was on holidays with his family. Theo was 5 years old. He could 
not swim and as a result of a genetic condition had no sense of danger. He accessed the swimming 
pool, which had no protective barrier, after leaving his hotel room unnoticed while his parents were 
asleep. The hotel room locks were of a design that did not secure against Theo leaving the room. 

CORONER’S CONCERNS 

During the course of the inquest the evidence revealed matters giving rise to concern. In my 
opinion there is a risk that future deaths will occur unless action is taken. In the 
circumstances it is my statutory duty to report to you. 

The MATTERS OF CONCERN are as follows. 

Theo was particularly vulnerable in that: 

5 

1.  He had developmental delay; 
2.  He had no sense of danger; 
3.  He was prone to waking during the night; 
4.  He was fully mobile; 
5.  He loved swimming and had some sensory needs; 
6.  He was unable to swim. 

The door locks in the hotel room were of a design to promote safety during a fire and could 
be easily disengaged from the inside; 

There was no secondary security measure such as a chain in place; 

Theo’s parents recognised the risk of Theo leaving the room unsupervised and attempted to 

Coroner’s Office, The Old Courthouse, Courthouse Street, Pontypridd, CF37 1JW 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 mitigate this by locking the door and putting additional impediments in the way of the door 
including 2 pushchairs and an empty suitcase; 

ABTA guidance does make reference to a security chain/latch but this is the context of 
enabling customers to identify a visitor at the door and merely states such could be 
provided. However, there is no reference in the guidance to any form of security in the 
sense of controlling the exit from the room. 

No specific information about door locks and security chains was given to Theo’s parents on 
booking or on arrival. 

The pool that Theo was found in did not have any physical barrier in place to prevent 
uncontrolled or unsupervised access by children. 

ACTION SHOULD BE TAKEN 

In my opinion action should be taken to prevent future deaths and I believe you and 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 12th December 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 family who may find it useful or of interest. 

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

6 

7 

8 

The Chief Coroner may publish either or both in a complete or redacted or summary form. 
She may send a copy of this report to any person who she 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. 

Coroner’s Office, The Old Courthouse, Courthouse Street, Pontypridd, CF37 1JW 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 16 October 2025 

SIGNED: 

9 

Gavin Knox HM Coroner for South Wales Central Coroner Area 

Coroner’s Office, The Old Courthouse, Courthouse Street, Pontypridd, CF37 1JW 

Phone/Ffôn  (01443) 281100 

Fax/Ffacs  (01443) 485862

Responses

2 responses 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 Abta (PDF)
S A B T A

Travel with confidence

ABTA Ltd  30  Park Street, London SE1 9EQ

T: +44  (0)20 3117 0500  |  E: abta@abta.co.uk  |  www.abta.com

27 November 2025

Graeme Hughes
His Majesty's Senior Coroner
South Wales Central Coroner Area
Coroner's Office
The Old Courthouse
Courthouse Street
Pontypridd
CF37 1JW

Dear Mr  Hughes

Thank you for your letter concerning the sad accidental death of Master Theo Phillip Treharne-Jones
in June 2019. We write in response to the Regulation 28 Report to Prevent Future Death in which Gavin
Knox HM Coroner named ABTA as an interested party. We have carefully reviewed the report and your
request for  action.

I thought it would be helpful to firstly outline the purpose and role of ABTA. We are a trade association
representing and providing services to  our members, who make up a significant part of the UK travel
industry and  who  sell a range of  travel services including package holidays, flights, accommodation,
and  car  hire.  ABTA provides  services  to  consumers  through  our  customer  support  and  arbitration
services which deal with a range of consumer issues involving ABTA members.

ABTA also  fulfils  a  self-regulatory  role  in  respect  of  its  members through its  Code  of  Conduct  and
financial  protection  mechanisms.  Concerning health, safety,  and  security,  we  provide  guidance  to
members and raise awareness on safety issues with consumers and destination authorities.

I should point  out, however, that  there  are many travel providers who  are  not  ABTA members. Any
company that is not  an ABTA member would not  have access to the advice and guidance we  provide
to  our  members on  health  and safety matters, or  other  topics. In  addition, UK travellers could  visit
destinations without using a UK travel agent or tour  operator (either ABTA member or  otherwise) to
make their travel arrangements.

ABTA regularly convenes a committee of  Health and Safety leads from  UK tour  operators. We  bring
them together to discuss and review incidents and issues that consumers have faced while on holidays,
using evidence-based information to shape guidance to members and consumers. We also collaborate
with  consultants  and  destination  authorities  and  external  stakeholders,  such  as the  FCDO, to  help
consumers avoid issues overseas.

Registered in England No. 551311

EClAA

THE EUROPEAN TRAVEL ASENTS'
AMO TtlUfi OPERATORS' ASSOCIATIONS

 Local standards and regulations with regards to safety, health, hygiene, and security vary from country
to  country,  and  even  from  region  to  region,  and  there  is  no  globally  recognised  tourism
accommodation health and safety standard.

As  part  of  our  ongoing commitment  to  support  improvement  within  the  tourism  accommodation
sector, through collaboration with our  members and a team of health, safety and security specialists,
ABTA has produced a guidance publication called the  ABTA tourism accommodation health &  safety
technical guide.

The  first  edition of  the  guide was developed in  2000/1 and is reviewed every five  years; the  current
2023 version is available in English and eight other languages including Greek. The guide does not seek
to  supersede  or  replace  standards  stipulated  by  local  law  and  regulation,  but  in  the  absence  of
overarching international standards, it  is designed for  use by ABTA members, Ministries of Tourism,
destination authorities, hotel  associations and  associated  accommodation suppliers to  support and
assist them with a suggested pragmatic approach to their safety management processes.

The guide is intended to assist suppliers in the development of their own safety and risk
management programme, to  be used in conjunction with their  own  programme for  compliance with
local, regional, and national safety legislation.

Within the  security section of  the  guide  there  is information relating to  door  locking mechanisms, I
have included relevant extracts for  your reference:

Security provisions should be provided within sleeping accommodation to help prevent access
by intruders.

(cid:127)  All customer room doors should be secured with an adequate locking system. Ideally

doors should  lock  automatically when  they  are closed and open only  with  a key or  electronic
key card.

(cid:127)  Doors should befitted with a double lock or dead bolt for  use internally when customers are in

their rooms to provide additional security.

(cid:127)  To enable customers to  identify a visitor at  the door, a spy hole or  security chain/latch could

be provided.

(cid:127)  Windows and balcony doors in the customer room should be provided with  locking devices

Within  the  fire  safety  section  for  all  building types  1-5,  the  means  of  escape  section  of  the  guide
includes information relating to  the  entrance  doors  of  rooms  and  apartments and  I  have  included
relevant extracts for  your reference:

(cid:127)  Entrance doors rooms and apartments should be easy to open from  the inside at all times.

We have  considered your  recommendation and  in  our  view  the  recommendation of  security chains
for  any  other  reason  than  highlighted above could inadvertently create fire  safety risks and  hamper
customer evacuation in an emergency.

We  will  continue to  work  with  our  members and other stakeholders to  make this guidance available
to travellers.

 We are not aware of the full facts in the specific case which is the subject of your report and therefore
we are unable to  comment any further regarding the  tragic accidental death  of  Master Theo Phillip
Treharne-Jones or the safety provisions provided at the accommodation. We wish to offer our sincere
condolences, through your office, to his parents and wider family and friends.

Yours sincerely,

Chief Executive Officer
ABTA -  The Travel Association
Response from Tui (PDF)
TUI

Mr Gavin Knox, HM Coroner
Coroner's Office
The Old Courthouse
Courthouse Street
Pontypridd
CF37 1JW

United Kingdom

Dear Mr Knox

04 December 2025

Thank you for your Prevention of Future Deaths report dated 16 October 2025.

Before responding to your concerns, and whilst I am aware that TUI UK passed on its
condolences through the Inquest process, I would like to personally express my
sympathy to the family of Theo and my sadness at his death.

Your report has been considered at  one of TUI Groups Safety and Risk meetings (and as
you are aware relevant matters had been considered in advance of the Inquest). I have
since considered, and following this careful and thorough review we have decided not to
take any further action. I set out reasons for that below. In essence it  is considered that
any action which could be taken is likely to create significant and unacceptable risk,
particularly in relation to fire.

I am aware that during the Inquest, reference was made to the Tourism Accommodation
Health & Safety Technical Guide produced by ABTA. That guide was updated by ABTA in
2023 following their consultation with various industry experts. The guidance remains
the materially the same as that in the 2017 guidance which was before you as regards
relevant risks arising from this matter.

In relation to Fire Safety, there are different building types considered in the guide, and
at the Inquest, the relevant building was type 2 (type 1 are single dwellings, the other
types are classic hotel blocks of different configurations).  The wording for Type 1
buildings is that, “All  doors should be easy to open from  the  inside at  all  time and
should always be unobstructed” , and for Types 2 to  5,  “Entrance doors to rooms and
apartments should be easy to open from  the  inside at  all  times”.

TUI AG | Karl-Wiechert-Allee 23 | 30625  Hannover | Germany
Marc Jordan I Marc.Jordan@tui.com | www.tui.com

TUI  G R O U P   | TUI AG | Karl-Wiechert-Allee 23, 30625  Hannover | Postfach 61 02 09, 30602 Hannover, Deutschland
Tel. +49 511  566-00, Fax +49 511 566-1901 | www.tuigroup.com
Vorsitzender des Aufsichtsrates: Dr.  Dieter Zetsche | Vorstand: Sebastian Ebel (Vorstandsvorsitzender), Mathias Kiep, Peter  Krueger, Sybille Reiss, David Schelp
Sitz der  Gesellschaft: Berlin/Hannover | Handelsregister: Amtsgericht Berlin-Charlottenburg HRB  321 | Amtsgericht Hannover HRB  6 580 | Ust-ld.Nr. DE 115653127
Bankverbindung: Commerzbank AG | IBAN DE53  2504 0066 0310 8958 00  | BIC (SWIFT) COBADEFF250
Bankverbindung: Deutsche Bank  AG | IBAN  DE52 2507  0070 0054 5459 00  | BIC (SWIFT) DEUTDE2HXXX
Bankverbindung: UniCredit Bank  AG | IBAN DE46 7002  0270  0000  2809 04 | BIC (SWIFT) HYVEDEMMXXX

 TUI

Seite 

2

Datum  04 December 2025

In relation to other doors, for example, on corridors leading from/to rooms, the
guidance is that  doors should open in the direction of escape, and be easy to open from
the inside at all times without the use of a key.

In relation to Security, the guidance is that security provisions should be provided within
sleeping accommodation to help prevent access by intruders. To enable customers to
identify a visitor at the door, a spy hole of security chain/latch could be provided, but
as discussed at the Inquest, the purpose of a chain/latch is to enable a customer to
identify a visitor. If  a chain/latch is present, and I accept that  they may be present in
some rooms at some accommodation, permanent use militates against fire safety
guidance.

Having reviewed and considered carefully we are of  the opinion that if  all rooms were
provided with security locks/chains (or other devices designed to control exit), that
would significantly increase the risk of harm in the event of a fire or other emergency,
as swift and easy exit  from the room in an emergency would be hindered. We are not
aware of any form of device that could control exit  from the room, and at the same
time, not prohibit swift exit  from the room during a fire or other emergency.

I should point out that we insist upon locking mechanisms on patio doors etc, that  lead
directly on to “swim up pools”, in essence from the “back  door”  of the room, not the
primary exit in the event of an emergency. This is to guard against the risk of
unsupervised access to a pool, that  probably does not have lifeguard provision,
immediately outside the room. It does not impact the ability of the room occupants to
escape in the event of an emergency.

In relation to communal pools, (and generally), hotels and other accommodation
providers need to comply with local standards. Evidence was provided to you at the
Inquest as regards the local standard in Greece relating to pool barriers etc, and
evidence as regards the increased risk that can be created with such barriers (for
example, being trapped unseen beneath pool covers, falls etc  from climbing on fences).
We do not provide guidance as to locks on room doors. We provide information to
comply with the relevant statutory regulations. We also invite customers (or potential
customers) through the safety advice hub on our website to contact us if  they have

 TUI

Seite 

3

Datum  04 December 2025

questions re safety, and booking documents invite customers to contact their Rep in
resort for help or guidance.

As I said at the outset of this response, I am terribly sorry for Theo and his family for
this tragic event. Whilst at present we do not consider that we can take action, as that
will unreasonably increase other risks, we will keep this under review.

TUI GroupX
Director'Group Security, Health & Safety, Crisis & BCM

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