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Trauma Resilience in UK Policing


A feasibility study of post-incident trauma processing techniques (Randomised Controlled Trial design) was conducted between March 2018 - March 2019 with over 70 new recruits at Greater Manchester Police after the arena attack. Findings showed the techniques to be teachable and immediately effective in increasing sense of ease and safety around difficult incidents and recall. Results indicated that the trauma techniques:

  • Significantly improved ease of wellbeing about incidents to which they are applied (with large effect sizes), 
  • Improved recall (with over 65% remembering between one and ten new details about what happened),
  • Established a sense of safety and closure around incidents (with 99% of participants successfully recalling and applying ‘safety sues’ to their memory of the difficult incident) 
  • Are teachable and well-received, with high levels of advocacy (over 60% were likely to find it easy to apply the techniques to incidents in the future and over half expecting to share the techniques with peers, family and friends).
July 2023 over 4000 officers and staff have been trained in the techniques and results continue to show the techniques both safe and effective in increasing individuals ability to make sense of difficult experiences. 

With a call from the Police to improve post-incident support and the neuropsychological understanding of how this can be achieved, the Trauma Resilience in UK Policing project successfully conducted a 2-year trial of trauma-processing techniques in 2017. Results published in 2019 suggest the techniques to be immediately effective in improving a sense of ease and safety around traumatic scenarios and improves recall. The study shows the techniques to do no harm, proves the concepts that trauma processing techniques are a) teachable and b) that their application in operational policing is both feasible and well-received. The techniques are now being delivered for trauma impact prevention through a ‘Train-the-Trainer’ modelled programme by Police Care UK. For more information on the TIPT 2023 offer, click here.

Why trauma impact prevention techniques? 

In 2016, serving and former police officers across the UK called for more support after attending difficult or traumatic incidents on the job (2016 Injury on Duty Report by the Police Dependants’ Trust, now Police Care UK). In the same year, new evidence from neuropsychology suggested that trauma processing can be enhanced by stimulating hippocampal processing in the brain (see Miller et al., 2017 for a review). In the wider field of neuroscience, high profile studies were demonstrating that the hippocampus was receptive to training and rewiring or "self-directed neuroplasticity" (see Maguire et al., 2001 Taxi Driver study). 

Amid the wave of terror attacks in 2017 and in particular in the wake of the Manchester arena attack in 2017, the need to understand what can be done to enhance and protect trauma resilience in policing became a pressing public issue. 

In 2018, the University of Cambridge and Police Care UK engaged with over 18000 to ask important questions about trauma management and wellbeing in forces, and in doing so established the first UK police PTSD prevalence rate (1 in 5) and the first-ever Complex-PTSD prevalence rate (12%) in a working population (Brewin, Miller, Soffia et al., 2019 in press). The survey 'Policing: The Job & The Life' revealed that over 2/3 of officers and staff on the front line had 'insufficient opportunity to make sense of traumatic incidents' before moving on to the next job and over half reported that trauma was 'not well managed' in their force.  

Providing officers and staff with quick, simple and effective techniques to boost the hippocampus and to practice making sense of difficult incidents is a sensible solution to build resilience to future trauma exposure and to help minimise the risk of developing complex disorder from trauma. 

What did we do?

Forty-six new recruits were taught and practised new trauma processing techniques over a period of three days in May 2018, then refreshed with a 2-hour session in August 2018. Twenty-six officers formed a control group who were trained in February 2019. The research team monitored the level of trauma impact on the 70+ participants every 4 weeks until April 2019. 

The techniques involved testing specific forms (allocentric and egocentric) of spatial memory using drawing and mapping as well as episodic memory through the generation of extended timelines. Allocentric spatial processing is considered useful in trauma processing and has been used clinically for many years (Smith et al., 2015; Miller et al., 2017). The techniques have also been used in the forensic investigations and the Cognitive Interview to improve witness recall (Dando et al., 2008; Hope et al, 2013). The techniques are paper-based and materials comprised a participant workbook, Visual Assessment Scales on ease-of feeling and training presentations. 

What were the results?

The techniques significantly improved how “at ease” individuals felt about the difficult incidents, with a large effect size. Ninety-nine percent of participants were able to recall and use “safety cues” to reset the stress response. The techniques also improved recall with over 65% of participants remembering between one and ten new details about what happened.

Feedback on the accessibility of the training and how it is best put to operational use (as well as our data from the trial) all came together in our paper in Police Journal: Theory, Practice, Principles in July 2019. The paper is available from SAGE publications and we hope its findings will resonate with- and have implications for- policing beyond trauma resilience, including post-incident operational practice, force resilience programmes, therapeutic interventions and wider forensic investigation. Access the full article published in the Police Journal through SAGE Publications, here.

Of the (over) 1200 officers trained through the Train-The-Trainer model in 2020, fewer than one in 150 delegates experienced difficulty in the training sessions pertaining to trauma retriggering (an understandable concern for those not yet familiar with the training). What is more, detailed control data (n= 32) was collected between September 2020 and March 2021 which measured in-session health and wellbeing (using the Edinburgh-Warwick questionnaire) as was felt sense of ease about the training incident scenario being used (on a Visual Rating Scale of 0 to 10) and item recall. Results indicated that wellbeing was consistent throughout the training sessions and that both improvement in ease of feeling and improvement in recall about the incident were demonstrated as an effect of the techniques rather than an effect of simply time spent reflecting on the incident. Knowledge tests about the techniques also showed them to be teachable and learnable within the training session time (an average of four hours). 

Since 2019, the Trauma Impact Prevention Techniques (TIPT) have been taken up by thousands of officers across the UK based on positive experiences and word of mouth between forces with consistent and highly positive feedback. Non-police bodies and other emergency response services regularly express interest in the techniques and acknowledge their applicability to -and relevance for- any occupation which involves frequent exposure to challenging, difficult and potentially traumatic human experiences. The Fire Fighters' Charity have now been trained in TIPT and specialist units involved in intelligence work are also being trained in 2023. 

What's on offer now?

TIPT is delivered through a Train-The-Trainer model. The courses include an animation explaining how the techniques work and a short film showing officers and inspectors applying the techniques on-the-job in real operational policing scenarios. The courses come complete with training presentation, workbooks for officers to keep, a variety of merchandise (wristbands, sporks, mugs and pencils) and a video guide to support Trainers in new material for 2023. Course content includes an introduction to police wellbeing, psychoeducation on the brain and trauma processing, techniques practice and a de-brief session on how and when to practice the techniques and where to find more support. 

There is also TIPT Plus module which considers alternative methods of making sense of trauma in high risk roles. The course looks at atypical or secondary trauma processing (where conventional hippocampal processing of live incidents is less relevant) and collates resilience tools and advice from real life officers and staff working in specialist roles such as Child Sexual Exploitation, 999 Call Handling, Firearms, Post-Incident Procedures, Family Liaison, Technical Surveillance Units and Counter Terrorism. 


  • Brewin, C.B., Miller, J.K., Soffia, M., Peart, A., Burchell, B. (2019 in press). Posttraumatic Stress Disorder and Complex Posttraumatic Stress Disorder in U.K. Police Officers. Journal of Consulting and Clinical Psychology.
  • Dando C, Wilcock R and Milne R (2008) The cognitive interview: the efficacy of a modified mental reinstatement of context procedure for frontline police investigators. Applied Cognitive Psychology 23: 1. 
  • Hope L, Mullis R and Gabbert F (2013) Who? What? When? Using a timeline technique to facilitate recall of a complex event. Journal of Applied Research in Memory and Cognition 2: 20–24.
  • Miller J (2016) Navigating trauma: How PTSD affects spatial processing, Police Professional 532: 12–17. 
  • Miller JK, McDougall S, Thomas S, et al. (2017a) The impact of the brain-derived neurotrophic factor gene on trauma and spatial processing. Journal of Clinical Medicine 6: 108. 
  • Miller JK, McDougall S, Thomas S, et al. (2017b) Impairment in active navigation from trauma and post-traumatic stress disorder. Neurobiology of Learning and Memory 140: 114–123.

Latest news

Author's story

26 January 2024

The Marshwood Vale magazine of the South West features a front cover piece on Dr Jess Miller and how she found herself working in trauma resilience. To read a bit more about how the personal meets the professional, honouring the trusted adage "Re-search is Me-search", click here.

BLOG: The Policing Mind one year on

22 June 2023

Here Dr Jess talks about how her first book The Policing Mind: Trauma Resilience for a New Era has had impact since 2022: Transforming Society ~ Getting inside the policing mind In doing so, the book as been passed to the Home Secretary in the hope of further change to our police service being more trauma informed and open...

The Lancet featuring our trauma resilience project and trauma impact prevention techniques (TIPT)

23 March 2023

We are absolutely delighted to share that our project has featured in an essay by Jules Morgan in The Lancet Psychiatry on 21st March. Here is an extract : "People are only just starting to talk about complex PTSD, but we need to act now, says Jessica Miller (University of Cambridge, UK, and Police Care UK), Principal...

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