NHS vs Private Assessment for Children

An objective comparison of NHS and private assessment pathways, helping you understand the advantages, limitations, and practicalities of each option.

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Why Assessment Matters

If you suspect your child may have a developmental difference, learning difficulty, or mental health need, getting a thorough assessment can be an important first step. An assessment helps to build a clear picture of your child's strengths, needs, and the kind of support that might help them thrive.

Assessments can cover a wide range of areas, including speech and language development, cognitive and learning abilities, social communication (such as autism assessments), attention and behaviour (such as ADHD assessments), emotional wellbeing, sensory processing, and motor skills. The type of assessment your child needs depends on their specific concerns.

A good assessment does more than provide a label or diagnosis. It should offer detailed, practical recommendations about how your child can be supported at home, at school, and in other settings. The findings may inform an application for an EHCP, support a request for exam access arrangements, or simply help parents and teachers understand how best to help the child.

In the UK, assessments can be accessed through the NHS (usually via a GP referral) or through private practitioners. Both routes have advantages and limitations, and understanding the differences can help you decide which is the most appropriate path for your family.

The NHS Assessment Pathway

NHS assessments are funded by the public health system and are provided free of charge at the point of access. The process usually begins with a referral from your child's GP, although some services accept referrals from schools or health visitors. Once referred, your child is placed on a waiting list for assessment by the relevant NHS service.

The NHS pathway has a number of strengths. The assessments are carried out by multidisciplinary teams, which often include paediatricians, clinical psychologists, speech and language therapists, and occupational therapists. This team approach can provide a comprehensive view of the child's needs. NHS assessments are widely recognised and accepted by schools, local authorities, and other public bodies.

However, the most significant challenge with the NHS pathway is waiting times. Depending on the area and the type of assessment, families may wait anywhere from several months to over two years. The NHS Constitution states that patients have the right to access services within maximum waiting times, but in practice, demand for children's neurodevelopmental and mental health services far exceeds capacity in many areas.

During the waiting period, children may not receive the support they need, and their difficulties can become more entrenched. Some families find the uncertainty and length of the wait distressing, particularly when their child is struggling at school.

The Private Assessment Pathway

Private assessments are carried out by independent practitioners or clinics and are paid for by the family. The main advantage of the private route is speed: most private practitioners can offer an assessment within weeks rather than months or years.

Private assessments are carried out by qualified professionals, including clinical and educational psychologists, paediatricians, speech and language therapists, and occupational therapists. It is important to check that the practitioner is registered with the appropriate professional body, such as the Health and Care Professions Council (HCPC), the British Psychological Society (BPS), or the General Medical Council (GMC).

The cost of private assessments varies depending on the type of assessment and the professional involved. As a rough guide, educational psychology assessments typically range from £500 to £1,200, autism assessments from £1,500 to £3,000, and ADHD assessments from £800 to £2,000. Some families choose to have a private assessment while they remain on the NHS waiting list, so they can access support sooner without losing their place in the NHS queue.

It is worth being aware that while private assessments and diagnoses are valid, some NHS services and local authorities may not automatically accept them without further review. NICE guidelines state that diagnoses should be accepted regardless of where they were made, but practice can vary between areas.

Comparing the Two Pathways

When deciding between an NHS and a private assessment, there are several factors to consider. Cost is an obvious one: NHS assessments are free, while private assessments require a financial outlay. For some families, the cost of a private assessment may be prohibitive, while others may feel it is a worthwhile investment given the potential delays in the NHS pathway.

Timeliness is another important factor. If your child is approaching a key transition point — such as starting school, moving to secondary school, or preparing for exams — the timing of the assessment may be critical. A private assessment can provide information and recommendations that allow support to be put in place more quickly.

The scope of the assessment is also worth considering. NHS multidisciplinary assessments may be more comprehensive, involving input from several different professionals working together. Private assessments may focus on a specific area, such as educational psychology or speech and language, although some private clinics do offer multidisciplinary packages.

Acceptability is another consideration. While both NHS and private assessments should be given equal weight in law, in practice some schools and local authorities may be more familiar with NHS assessments. However, a well-written, thorough private report from a suitably qualified professional should be accepted as valid evidence. NICE Clinical Guideline CG128 (autism) and NG87 (ADHD) provide standards that apply regardless of the setting.

How ChildWize Can Help You Choose the Right Path

Deciding whether to pursue an NHS assessment, a private assessment, or both can feel overwhelming. ChildWize is here to help you think through your options and find the right specialist for your child.

Our platform connects families with qualified professionals across a range of specialisms, including educational psychology, clinical psychology, speech and language therapy, occupational therapy, and developmental paediatrics. All our specialists are registered with the relevant professional bodies, and their reports are designed to be accepted by schools, local authorities, and exam boards.

If you are unsure what type of assessment your child might need, you can book an initial consultation with one of our specialists to discuss your concerns and explore the options. They can help you understand what the assessment process involves, what the likely outcomes might be, and how the findings could be used to support your child.

Many families come to ChildWize because they are on an NHS waiting list and want to access support sooner. Others choose ChildWize because they want a specific type of assessment that is not readily available through their local NHS services. Whatever your situation, we can help you find a specialist quickly and without unnecessary barriers.

Frequently Asked Questions

Will a private diagnosis be accepted by the NHS?

NICE guidelines state that a diagnosis should be accepted regardless of where it was made, provided it was carried out by a suitably qualified professional following the appropriate clinical pathway. In practice, acceptance can vary between NHS services and local areas, but a well-documented private assessment from a registered professional should be recognised.

Can I get a private assessment while on the NHS waiting list?

Yes. Having a private assessment does not affect your place on the NHS waiting list. Some families choose to do this so that they can access support and recommendations sooner, while still pursuing the NHS pathway.

How do I know if a private assessor is properly qualified?

Check that the practitioner is registered with the appropriate regulatory body. Psychologists should be registered with the HCPC, doctors with the GMC, and therapists such as speech and language therapists or occupational therapists with the HCPC. You can verify registration on the relevant body’s online register.

Will a private report help with an EHCP application?

Yes. Local authorities are required to consider evidence from private assessments as part of the EHC needs assessment process. A detailed report from a qualified professional can provide valuable evidence of your child’s needs and the provision required to meet them.

What should a good assessment report include?

A thorough report should describe the assessment methods used, present the findings clearly, provide a formulation or diagnosis where appropriate, and include specific, practical recommendations for support at home and at school. It should be written in language that parents and teachers can understand.

Related Guides

What to Expect from a Child's Assessment

A practical guide to the assessment process for children, covering what happens before, during, and after an assessment, and how you can prepare.

How to Get an EHCP

A practical, parent-friendly guide to requesting an Education, Health and Care Plan, including timelines, your legal rights, and how to gather the evidence you need.

Need Expert Support?

ChildWize connects you with qualified SEND specialists who can provide assessments, reports, and ongoing support for your child.