Expert witness services

Information for solicitors

Dr Tully is an award winning Consultant Forensic Psychologist (HCPC Registered Psychologist and BPS Chartered Psychologist). Dr Tully and her Associate Psychologists provide expert witness psychological assessment reports that may be used for criminal proceedings, prison parole hearings and care proceedings/social services. Dr Tully has been completing assessments such as parole reports for a number of years and has particular expertise in risk assessment, as is evidenced in her clinical work and her research interests/publications. Our team has a broad range of expertise and our independent reports and oral evidence have received great feedback from the solicitors and advocates of the many firms that we have worked with.
Our team provides psychological assessments nationwide. Associate Psychologists who work with us are all HCPC Registered Clinical or Forensic Psychologists and they have various areas of expertise. This means that the wealth of knowledge and experience within Tully Forensic Psychology Ltd is vast. Further, as part of quality assurance, all of the work of our expert psychologists is carefully inspected by a Senior or a Consultant Forensic Psychologist, and psychologists receive supervision on their work in line with best practice.

This page summarises some of the contexts in which expert witness reports are provided, and some of the commonly used types of assessment tools are listed.

Our team are friendly and approachable, and so if you have any queries, or the particular issue surrounding your client’s case is not listed in the examples of work we engage in, please click through to the contact page to get in touch via email or phone. Also see Dr Tully’s regular contribution to JailMail, the national prison newspaper by clicking here. On request we can promptly provide you with an estimate of fees that you can easily use to apply for LAA funding, and timescales are discussed in advance as part of this transparent process. We pride ourselves in completing on time and in our clear communication with the referrer.

Along with an estimate of fees you will be provided with the psychologist’s up to date expert witness CV to view in order to ensure that you are well informed and fully content prior to the work proceeding. You will be able to feel safe in the knowledge that all of our psychologists have up-to-date DBS/CRB checks, professional indemnity insurance, and appropriate professional registration (minimum British Psychological Society Chartered and Health and Care Professions Council Registered) alongside other professional training.

Independent prison psychology reports

Independent prison reports are provided in life and IPP/indeterminate parole cases, or other cases where an independent psychological assessment is useful e.g. recall review. These psychological assessments can be extremely helpful where there is a disagreement over where a client can be safely managed e.g. suitability for progression to Category D (open) prison conditions. In addition there are times where there may be a query relating to suitability for an offending behaviour programme, or indeed the necessity for such programmes to be completed in closed prison conditions. Clearly suitability and necessity for programmes to be completed are two different issues, and our expert reports can provide opinion on both of these issues.

Other reasons that an independent expert psychology report may be critical is where a particular assessment is needed, for example psychopathy (PCL-R), personality disorder (e.g. IPDE) or learning disability assessment (e.g. WAIS-IV), but the prison psychology team is not able to provide such an assessment in line with the timings of the parole review.

An independent psychology report is also useful where the client could be considered to have a ‘complex case’, which may be where the client has mental health needs (e.g. schizophrenia) or a personality disorder (PD). Similarly the client may have a learning difficulty or disability (LD/ID) or developmental disorder such as Autism Spectrum Disorder (ASD). They may have spent time in a hospital setting as well as prison and their progression or treatment pathway may not be clear. Our team provides comprehensive assessment in all cases, and the range of experience across NHS and prison based settings means that we are well positioned to provide an expert opinion in these types of cases.

We provide reports nationwide, mainly with LAA funding but also for privately funded cases (with instructions from the legal representative).

Criminal court reports

This type of report may be needed where, as mentioned above in relation to prison assessments, the client has additional factors that may need consideration when the court is deciding on guilt or disposal. This is an area where the need for cognitive functioning assessments is particularly high, and in these cases an independent psychological assessment can give an opinion on learning disability and the impact on risk and treatment. Additionally, the court may wish to know how a person’s suggestibility and cognitive functioning or their mental health may have impacted on their thinking and role in an alleged offence; we can assess the client in order to explain these issues.

Independent psychological risk assessment reports are useful at the pre-sentence stage as this may aid probation when they are writing their pre-sentence recommendations (e.g. the impact of learning difficulty on the client’s ability to engage in prison based SOTP).

Local Authorities/Care proceedings

We provide expert assessments of children and adults to assist this important process.

Mental health review tribunal (MHRT)

Our team provides independent assessments of risk and formulation of offending. Assessment of personality is often a contentious issue and we are able to provide an expert opinion in these types of cases (e.g. IPDE).

Common types of assessments and tools you may have heard of:

Your instructions may involve issues such as: ‘risk of future sexual offending and suitability for open conditions‘ or ‘assessment of domestic violence risk and suitability/need for (a specific) treatment programme‘. Dr Tully and her Associates will then use their expertise to choose the most clinically and empirically relevant tools to aid report writing and formulation of professional opinion.

The list of assessment tools below are some of the tools that are commonly used within the field of forensic psychology. They are assessment tools that our team may (or may not) choose to use, or these are assessments that your client may have already had, but where an independent assessment is needed to provide opinion on the case.


Examples may include:

  • HCR-20 or HCR-20v3 – violence risk assessment
  • Risk for Sexual Violence Protocol / RSVP – sexual violence risk assessment
  • RM 2000 / Risk Matrix 2000 / SARN – risk of sexual offending tools often used by prison psychologists
  • Spousal Assault Risk Assessment / SARA – domestic violence risk assessment
  • Psychopathy Checklist-Revised / PCL-R – assessment of psychopathy or psychopathic personality disorder
  • International Personality Disorder Examination / IPDE – personality disorder diagnostic assessment
  • Wechsler Adult Intelligence Scale / WAIS-IV / cognitive functioning assessment / (part of) learning disability assessment
  • Wechsler Abbreviated Scale of Intelligence / WASI-II / cognitive functioning screening assessment
  • Diagnostic assessment of ADHD
  • Diagnostic assessment of Autism Spectrum Disorder (ASD)
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