If you've been told you'll need to wait months—or even years—for an ADHD assessment, you're probably asking the same question as thousands of other adults across England:
The delay can feel incredibly frustrating, especially when ADHD symptoms are already affecting your work, education, relationships or mental wellbeing. While the waiting time varies between different NHS areas, the reasons behind these delays are more complex than many people realise.
Understanding what's causing the backlog can help you make informed decisions about your next steps rather than feeling stuck in uncertainty.
One of the biggest reasons waiting lists have grown is the significant increase in referrals for both children and adults.
Greater public awareness, improved understanding among healthcare professionals, and increased discussion of ADHD in schools, workplaces and the media have encouraged more people to seek an assessment.
This isn't necessarily because ADHD is becoming more common. Instead, many adults who were never assessed during childhood are finally recognising lifelong symptoms and seeking professional help.
The result is a referral system that has seen demand increase much faster than available capacity.
An ADHD diagnosis isn't something that can be completed during a routine GP appointment.
Assessments require clinicians with specialist training who can evaluate:
Because these assessments are detailed and evidence-based, appointments often take considerably longer than standard outpatient consultations.
Training additional specialists and expanding services takes time, meaning demand can outpace workforce growth.
Many people assume an ADHD assessment is simply a questionnaire.
In reality, clinicians must carefully determine whether symptoms meet recognised diagnostic criteria while ruling out other conditions that may present similarly.
The assessment may involve:
ADHD symptoms typically begin during childhood, even if they were not recognised at the time.
Clinicians assess how symptoms affect work, education, relationships and daily responsibilities.
Anxiety, depression, autism spectrum condition, sleep disorders and other factors may also influence concentration and behaviour.
This careful approach improves diagnostic accuracy but also increases appointment length.
Waiting times differ significantly across England because NHS services are commissioned locally.
Some areas have:
This means two people living in different parts of England may experience very different waiting times despite seeking the same assessment.
COVID-19 placed significant pressure on NHS services across many specialties.
Routine appointments were disrupted, clinical resources were redirected, and waiting lists grew across numerous healthcare services.
Although ADHD referrals continued to rise, many services were still managing the backlog created during the pandemic, contributing to longer waits in some regions.
Although you cannot usually control waiting times, you can take practical steps to prepare.
If your circumstances change or your symptoms become more severe, arrange another appointment to discuss your options.
Document examples of:
These notes may be useful during your assessment.
If you're registered with an NHS GP in England and meet the eligibility requirements, you may be able to discuss the NHS Right to Choose pathway with your GP. This allows eligible patients to request referral to an approved provider rather than remaining solely on their local waiting list.
Long waits can be emotionally difficult. Maintaining healthy routines, seeking support from trusted friends or family, and speaking with your GP if your mental health worsens can all make the waiting period more manageable.
Absolutely not.
The increasing demand for assessments reflects greater recognition of ADHD and the importance of receiving an accurate diagnosis.
While waiting lists are frustrating, the assessment process remains thorough because clinicians need to ensure that any diagnosis is based on comprehensive clinical evidence rather than assumptions.
Receiving the correct diagnosis is more valuable than receiving a rushed one.
NHS ADHD waiting lists are long because demand has risen rapidly while specialist assessment capacity has struggled to keep pace. Comprehensive diagnostic assessments, workforce limitations, regional variation and the lasting impact of the pandemic have all contributed to current delays. Although waiting can be challenging, understanding why these delays exist and discussing options such as the NHS Right to Choose pathway with your GP may help you move forward while preparing for a thorough and accurate assessment.
Greater public awareness, improved recognition by healthcare professionals and adults identifying lifelong symptoms have all contributed to increased referral numbers.
No. Waiting times vary considerably depending on local demand, staffing levels and commissioned ADHD services.
A GP can recognise symptoms and make a referral, but a formal ADHD diagnosis is generally carried out by a qualified specialist.
Eligible patients registered with an NHS GP in England may be able to access the Right to Choose pathway, although eligibility and provider availability should always be discussed with their GP.
The best option depends on your individual circumstances, local waiting times and clinical needs. Your GP can explain the referral options available to you.
Contact us to make an enquiry or for more information
Call Us
Privacy Policy | Legal | Accessibility