Finally able to read the Mental Health Act White Paper to see what it actually proposes.... People w/ learning disability/autism could still be admitted for assessment under s.2

"when their behaviour is so distressed that there is a substantial risk of significant harm to self or others (as for all detentions) and a probable mental health cause to that behaviour that warrants assessment in hospital"

then..."If it is identified that a mental health condition is the driver, there may be continued justification for detention under the MHA, and the patient might in such cases follow a treatment pathway under section 3 for the mental health condition....

...Where the driver of this behaviour is not considered to be a mental health condition eg due to an unmet support need/social or emotional need/physical health need (including untreated pain)...detention under the MHA would no longer be justified & detention should cease.

Link here: https://www.gov.uk/government/consultations/reforming-the-mental-health-act/reforming-the-mental-health-act

No mention of changing s.117 to cover s.2 admissions, so no free aftercare will the corollary of no s.3 admissions