Harmful sexual behaviour

Expert Witness Reports

Our experts prepare CPR Part 35 compliant reports in cases involving harmful sexual behaviour in children and young people. We assist solicitors, the court, claimants and defendants across family proceedings, civil claims, CICA applications, redress schemes, limitation issues and wider safeguarding contexts.

01

What our behaviour risk reports cover

Our harmful sexual behaviour expert witness work addresses concerns about inappropriate or harmful behaviours in children and adolescents, including risk, context and developmental factors. Reports may assist the court, solicitors, claimants and defendants across family proceedings, civil litigation, CICA claims, redress schemes, limitation arguments and safeguarding decision-making.

Typical instructions include:

  • Family proceedings involving harmful sexual behaviour concerns
  • Risk assessments for children and adolescents in care contexts
  • Civil claims involving alleged behavioural harm or supervision failures
  • Vicarious liability issues concerning institutional responsibility
  • CICA applications requiring psychological and behavioural evidence
  • Redress schemes involving historic safeguarding concerns
  • Limitation issues involving delayed recognition of harm
  • Human Rights Act claims involving protection failures

Reports are prepared in accordance with CPR Part 35 and the expert’s duty to the court. Experts may draw on recognised assessment frameworks and structured professional judgement tools, ensuring that conclusions are clearly reasoned and proportionate to the available evidence.

02

Experts for harmful behaviour cases

The experts we work with include clinicians experienced in child psychology, psychiatry and forensic risk assessment. Where needed, we coordinate input across disciplines so that behavioural, psychological and safeguarding issues are addressed together.

Consultant Child Psychiatrist
  • Behavioural risk formulation
  • Mental health factors
  • Developmental assessment
  • Future risk outlook
Clinical Psychologist
  • Harmful sexual behaviour assessment
  • Cognitive functioning
  • Emotional regulation
  • Therapy planning
Forensic Psychologist
  • RSVP risk assessment
  • Behavioural pattern analysis
  • Risk management strategies
  • Reoffending considerations
Specialist Social Worker
  • Family context review
  • Safeguarding planning
  • Placement assessment
  • Care recommendations
Behavioural Therapist
  • Intervention planning
  • Behaviour modification
  • Support strategies
  • Progress monitoring
Youth Justice Specialist
  • Offending behaviour context
  • Risk supervision needs
  • Rehabilitation pathways
  • Multi-agency coordination
03

The reports we prepare for behaviour cases

01

Risk Assessment Reports

These reports evaluate the nature, context and level of risk associated with harmful sexual behaviour. A sexual risk assessment expert witness report is structured in line with CPR Part 35 and explains the factors informing risk and management recommendations.


  • Risk level
  • Behaviour context
  • Protective factors
  • Management strategies
02

Clinical Assessment Reports

These reports address developmental, psychological and mental health factors linked to behaviour. They draw on structured approaches such as AIM3 assessment where appropriate, and remain compliant with CPR Part 35 requirements.


  • Developmental profile
  • Psychological factors
  • Assessment tools
  • Clinical opinion
03

Intervention Reports

Intervention reports consider appropriate therapeutic or behavioural programmes, supervision needs and support planning. They are framed within CPR Part 35 and focus on practical, proportionate recommendations based on assessed risk.


  • Therapy options
  • Support needs
  • Supervision levels
  • Outcome goals
04

Joint Expert Reports

Where more than one discipline is required, coordinated or joint reports may be produced following expert discussion. These comply with CPR Part 35 and assist in clarifying areas of agreement and disagreement.


  • Expert meetings
  • Joint statements
  • Issue clarification
  • Evidence comparison
04

Cases and proceedings we report for

Family court proceedings
Care proceedings
Civil claims
CICA applications
Historic abuse redress
Human Rights Act claims
Limitation disputes
Safeguarding investigations
Youth justice cases
HSB expert witness uk
05

FAQs

When is a harmful sexual behaviour expert witness needed?
An expert may be required where risk, behaviour patterns or safeguarding concerns are disputed. The expert reviews records, assessments and contextual information to provide an independent opinion to assist the court or decision-maker.
What is included in a harmful sexual behaviour assessment? +
An assessment may include developmental history, behavioural patterns, psychological factors, environmental context and risk formulation. Structured tools may be used alongside clinical judgement to support a balanced and evidence-based opinion.
How is an AIM3 assessment used in these cases? +
An AIM3 assessment provides a structured framework for evaluating risk and need in children displaying harmful sexual behaviour. It helps organise information across domains but must be interpreted alongside full clinical assessment and professional judgement.
What role does RSVP risk assessment play? +
RSVP is a structured professional judgement tool used to assess sexual violence risk. In appropriate cases, it can inform understanding of risk factors and management needs, but it does not replace a comprehensive clinical evaluation.
Can experts recommend interventions or treatment? +
Yes. Experts can outline appropriate therapeutic approaches, supervision levels and support needs. Recommendations are based on assessed risk and individual circumstances, and are framed within the expert’s professional expertise.
Are these reports used outside family proceedings? +
Yes. Reports may also be used in civil litigation, CICA claims and redress schemes where behavioural risk, causation or safeguarding issues arise. The format remains consistent with CPR Part 35 requirements.
Can experts determine whether behaviour was intentional? +
No. Determining intent is a matter for the court. Experts can comment on behaviour, risk factors and context, but do not make findings on legal responsibility or intent.
Who can instruct an HSB expert witness uk report? +
Experts may be instructed by solicitors acting for claimants or defendants, local authorities or jointly where appropriate. The expert’s duty remains to the court, and opinions must be independent and evidence-based.

Need an expert for your
behaviour case?

Send a summary of the case, relevant records, key issues and any deadlines. We will review the material and help identify the most appropriate expert discipline for the assessment required.