Bio, presentations & publications

Qualifications, employment history, previous conference presentations & publications

­­Below is my list of qualifications, my employment history and other details (click on the relevant box)

You can download a printable pdf version of this – here.

Jonny's qualifications, employment history & other details...

Name:                      Jonny V. Matthew

Contact email:

Contact phone:       07557-025322


  • MSc – Criminology & Criminal Justice – Cardiff University
  • DipCrimCJ – Cardiff University
  • B.A.(Hons) – Community Studies – Social Work – UWIC Cardiff
  • DipSW – UWIC Cardiff
  • Institute of Leadership & Management (ILM)

Current employment: 

Jonny is a part time (0.4) Head of Innovation and Engagement for the Wales Youth Justice Board (YJB), where he is working to develop, test and evaluate a developmental case management approach for youth offending teams to use with young people with complex and prolific offending histories.

Jonny also works part time as Youth Forensic Co-ordinator at the tier 4 All Wales FACTS Team (Forensic Adolescent Consultation & Treatment Service) where he specialises in advice and guidance on harmful sexual behaviour in young people who have committed offences.

Jonny is also a freelance consultant social worker and criminologist. He offers consultancy, training, assessment, inspection, editing and supervision on a private basis, working with local authorities, charities and the private sector.

Jonny runs a website and blog promoting recovery for troubled children and young people ( ). The Troubled Kids Blog offers information and inspiration to those working in the field. He has recently published his second book, ‘Working With Troubled Children & Teenagersand is co-founder of the TRM Academy, which promotes the understanding and use in practice of the Trauma Recovery Model (TRM); Jonny co-authored the TRM with Dr. Tricia Skuse (see www.TRMAcademy website for more information).

Previous employment:

Prior to his current roles, Jonny was a YOT officer for 5 years followed by 10 years as an adolescent sexual offending specialist with Barnardo’s. In August 2013, he left his 3-year post as Deputy Manager of Hillside Secure Children’s Home, where he was responsible for the therapy and other interventions, and joined the YJB. 

Jonny’s research interests are youth crime, attachment, adoption & fostering, abuse, safeguarding, therapeutic approaches and particularly how skewed development and trauma impact on children’s behaviour.

Jonny is a former Chair of NOTA Wales ( ) and co-opted National Committee member of BASW Cymru ( ) and is a founding member of the Wales Attachment Network.

Jonny's previous conference presentations & publications...

Publications & Presentations List – Jonny Matthew

MSc; BA(Hons); DipSW; DipCrimCJ; RSW 


Matthew, J. (2019) What To Do When Children Disclose. A practical guide to understanding and responding to children who tell us about their difficult stuff. Learn more here

Skuse T; Kennedy, D. & Matthew J. (2018) Developmental Trauma in young People Involved in the Criminal Justice System. Magistrate: Aug/Sept. 2018 

Matthew J. (2018) Working With Troubled Children and Teenagers: Values and Practice. Jessica Kingsley, London. Learn more here… 

Matthew, J. (2016) Looking After No.1: Self-Care for People Working with Troubled Children. Amazon CreateSpace. Learn more here… 

Skuse T. & Matthew J. (2015) The Trauma Recovery Model: Sequencing Interventions for Young Offenders with Complex Needs. Prison Service Journal 220 – July 2015 Free to download, here: 

Matthew J. & Skuse T. (2015) Slowly undoing: A case study. How an Attachment Approach Helped a Traumatised Teenager Come to Terms with his Past and his Behaviour. In Archer, C.; Drury, C, & Hills, J. Eds. (2015) Healing the Hidden Hurts: Transforming Attachment & Trauma Theory into Effective Practice with Adults, Children & Families. JKP: London. Details here 

Matthew, J. (2014) Connecting With Troubled Young People – an e-book about engaging troubled teenagers. Published on June 2014 

Matthew, J; Fisher, D. & Creeden, K. (Eds.) (2012) Journal of Sexual Aggression Special Issue: Children and Young People with Harmful Sexual Behaviour. Vol.18, Issue 1. Routledge 

Archer, C; Down, R.; Matthew, J.; Skuse, T.; & Wigley, J. (2012) Attachment: A Fairly Brief, Very Interesting and Reasonably Comprehensive Overview. Attachment Network Wales.       

Matthew J. & Skuse T. (2012) Attachment-Based Working in a Secure Setting for Adolescents. Attachment Network Wales Newsletter. 

Matthew, J. (2011) Assessment of Adolescents Displaying Harmful Sexual Behaviour, National Organisation for the Treatment of Abusers, Monograph. Available via:  Revised 2015 with Stuart Allardyce.


Matthew J. & Skuse T. (2013) The Trauma Recovery Model.  Welsh Centre for Crime and Social Justice annual conference.  Gregynog, Powys. 11-12 May 

Matthew J. & Skuse T. (2013) Incorporating Attachment Issues and Children’s Rights into Youth Justice: The Trauma Recovery Model.  Joint conference organized by Attachment Network Wales & Wales Observatory on Children’s Rights.  Swansea University. 12 June 2013. 

Matthew J. & Skuse T. (2013) Theory into Practice:  Interventions for Complex Needs.  Youth Justice Board Annual Convention.  Birmingham NEC. 26 November.

Matthew, J. (2014) Engaging Teenagers & the Exploited Becoming the Exploiter. Cornwall’s Conference on Children and Young People who Display Sexually Harmful Behaviour and the Re-launch of Gweres Kernow. Royal Cornwall showground, 27th March. 

Matthew. J (2015) Adolescents with Harmful Sexual Behaviour: Different from Adults? National Offender Management Service Forensic Psychology Training. 9 January 2015. 

Matthew, J. (2015) Fostering: The Gold Standard! 3 keynote addresses at The Annual Foster Carers’ Conference, St Erme, Cornwall. Cornwall County Borough Council. 14th April 2015 

Matthew, J. & Skuse, T. (2015) Attachment & The Adolescent Brain. The Attachment Network Wales National Conference: Attachment, Adolescents & Adolescence: Young People Looked After, Adopted, or Edge of Care. Christchurch Centre, Newport. 17th June 2015. 

Matthew, J. (2016) “Boys Will Be Boys” – Re-thinking the Victim-Perpatrator Dichotomy. Barnardo’s Cymru research launch of “I Never Spoke About It – Supporting Sexually Exploited Boys and Young Men in Wales. Pierhead Building, Cardiff. 15th July. 

Matthew, J. (2018) A Framework for Youth Work Practice: The TRM – How Can We Begin to Support LGBTQ Young People? Candle Community Trust, Republic of Ireland, Dublin, 4-5th December 2018. 

Matthew, J. (2019) Parenting & Mental Health: Struggles & Solutions. Flying Start & Families First day conference, Neath Port Talbot, Wales, 5th June 2019.



Matthew, J. (2009) An Investigation of the Ward and Hudson Self-Regulation Model of the Sexual Offence Process with Adolescents who have Sexually Offended. National Organisation for the Treatment of Abusers, Scotland conference. Stirling University management Centre 

Matthew J. & Skuse T. (2010) Applying current thinking on attachment and impaired neurodevelopment to work with young people who sexually offend: Practice implications for secure and other residential settings.  Presented at NOTA International Conference.  Belfast.  Sept 23-26. 

Matthew J. & Skuse T. (2014) Maltreatment, Impaired Development and Sexual Offending: An Adolescent Case Study. National Organisation for the Treatment of Abusers, Wales Annual Conference. Christchurch Centre, Newport. 25 March.

Matthew, J. (2014) Attachment and the Adolescent Brain. Welsh Government, Youth Justice Board & Attachment Network Wales training day. Metropole Hotel, Llandrindod Wells, 24 June 

Matthew, J. & Skuse, T. (2014) Working With Complex Needs – Psychological and Therapeutic Interventions in the Youth Justice System. Youth Justice Board Convention, Telford. 19th November. 

Matthew, J.; Skuse, T. & Johns D. (2015) The Wales Enhanced Case Management Approach to Complex and Prolific Offending Young People – Changing Assessment, Sequencing Interventions and Supporting Staff. Youth Justice Board Convention, Leicester. 25th November.

Matthew, J. (2018) Keynote address: Trauma-Informed Working: Theory into Practice – 2nd West Wales Harm Reduction Conference, Haverfordwest – 1st March. 

Matthew, J. (2018) Keynote address: Trauma-Informed Working in Youth Justice – The Trauma Recovery Model and the Enhanced Case Management approach – New Directions in Sex Offender Treatment, Birmingham, 17th April. 

Matthew J. (2018) Republic of Ireland, National Inter-Agency Prevention Programme – Harmful Sexual Behaviour Masterclass. Dublin 18th October. 

Matthew, J. (2018) Keynote address: The Roots of Harmful sexual Behaviour in Children & Teenagers – where it comes from and how to fix it. First NIAPP Conference, Republic of Ireland, Dublin, 19th October.


Matthew, J. (2008) An Investigation of the Ward and Hudson Self-Regulation Model of the Sexual Offence Process with Adolescents who have Sexually Offended. National Adolescent Perpetrator Network, Portland Oregon, U.S.A. 

Matthew, J. (2017) A Framework for Youth Work Practice – Applying The Trauma Recovery Model in a Youth Work Context: Dublin City Youth Services Board, Dublin, Eire. 23rd February. 

Matthew, J. (2018) Keynote address: Harmful Sexual Behaviour in Children and Young People. Palma, Majorca, Spain. 15th May.


NOTA – National Organisation for the Treatment of Abusers, former National Executive Committee member, current Policy Committee member, and current member and former Chair of NOTA Wales branch (2009-16). 

BASW Cymru – elected committee member (2013-14) 

BASW – British Association of Social Workers (& Social Workers’ Union). Member. 

Attachment Network Wales – founding member.

Social Care Wales – registered social worker (RSW)

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