South West Yorkshire Partnership NHS Foundation Trust told us via FOI (ref 5719, dated 18 June 2026) that, as at 2 June 2026, 7,056 adults were waiting for an ADHD assessment across the four areas it serves, against 434 adult ADHD assessments completed in 2025/26. EFFECTIVE WAIT: at the 2025/26 assessment rate (434/year), the 7,056-strong list represents an effective wait of roughly 16.3 years (7,056 / 434). Per area — waiting (2 Jun 2026) / assessments 2025/26 / median wait / effective wait: Barnsley 1,380 / 88 / 137 wks / 15.7 yrs; Calderdale 1,087 / 94 / 168 wks / 11.6 yrs; Kirklees 2,218 / 162 / 97 wks / 13.7 yrs; Wakefield 2,371 / 90 / 46 wks / 26.3 yrs. Barnsley falls under NHS South Yorkshire ICB; Calderdale, Kirklees and Wakefield under NHS West Yorkshire ICB (Trust named in WY ICB redirect 059FOI2627). The Trust declined to describe the pathway under s.1 FOIA, pointing to its website.

Leeds and York Partnership NHS Foundation Trust told us via forwarded FOI that they undertakes adult ADHD assessments. Key figures: 201 adult assessments in 2024/25; 4,345 adults currently waiting.

FOI4132 (11 Sep 2026): 2,183 adults on the BANDS ADHD initial-assessment waiting list; 55 adults given an initial ADHD assessment in 2025/26, 'in line with our commissioned capacity'. EFFECTIVE WAIT: at the 2025/26 rate (55 per year) the 2,183-strong list represents roughly 39.7 years (2,183 / 55). Stated wait: approximately 4.5 years; the longest-waiting person has waited 4 years 38 weeks. Pathway: referral form, screening, bi-weekly referral MDT (accepted/rejected with rationale), waiting list, then three planned appointments (full psychiatric history, QB Test, structured-interview ADHD assessment); if diagnosed and wishing treatment, a further waiting list for medication initiation.

South West Yorkshire Partnership NHS Foundation Trust told us via FOI (ref 5719, dated 18 June 2026) that children in Calderdale and Kirklees are held on a combined neurodevelopmental (ADHD + Autism) waiting list that cannot be separated by condition. As at 2 June 2026: Calderdale 427 waiting (260 CAMHS neurodevelopmental assessments completed 2025/26, median wait 68 weeks); Kirklees 2,333 waiting (340 completed 2025/26, median wait 155 weeks) — combined 2,760 children waiting against 600 assessments. Because ADHD cannot be isolated from Autism, these figures are shown in the table but excluded from the ADHD waiting-time graph. Both areas fall under NHS West Yorkshire ICB. No children's figure was provided for Wakefield.

FOI4132 (11 Sep 2026): latest data (January 2026) shows 1,590 children waiting for an ADHD assessment plus 1,871 waiting for a combined autism/ADHD assessment (3,461 in total; 3,987 including autism-only). 493 children given an ADHD assessment in 2025/26. EFFECTIVE WAIT (ADHD-only list): 1,590 / 493 = roughly 3.2 years. The Trust says anyone referred now would wait 5.5 years at the contracted 722 assessments a year, but activity is above contract so the longest current wait is 202 weeks. Pathway: children over 5 with ADHD traits in two settings, referral with school and family documentation, signposting while waiting, yearly telephone welfare checks, QB Test, MDT review, feedback appointment, medication waiting list where appropriate.

Mid Yorkshire Teaching NHS Trust told us via FOI that they undertakes child ADHD assessments. Key figures: 460 child assessments in 2024/25; 1,005 children currently waiting.

FOI0436IA (12 Aug 2026): the Trust says the number of children waiting and the number assessed in 2025/26 are 'not available' and suggests Leeds Teaching Hospitals NHS Trust may hold them. The service is 'only accepting priority children now'; for those priority assessments the current wait is under 6 weeks. Pathway (Leeds Children and Young People Mental Health Service neurodevelopmental assessment pathway): weekly triage meeting, waiting list, pre-assessment call, DSM-5-based neurodevelopmental assessment with developmental history, MDT panel, outcome appointment. Routine (non-priority) referrals are therefore effectively not being accepted.