From: Estimated numbers of people prescribed opioid substitution therapy in Scotland
2025/2026 published yesterday, the above and:

It is estimated that a minimum of 26,851 people in Scotland were prescribed an opioid agonist therapy (OAT) medication for the treatment of opioid dependence. This was a 4%decrease compared to 2024/25 (28,015). https://www.publichealthscotland.scot/publications/prescribing-for-opioid-dependence-in-scotland/prescribing-for-opioid-dependence-in-scotland-2025-to-2026/

Public Health Scotland’s multi-parameter estimates show that in the 15-34 age group, dependence fell from about 17,000 in 2014/15 to 9,100 in 2023/24—a reduction of 7,900. That is approximately a 46% drop in the estimated number of people aged 15–34 with opioid dependence between 2014/15 and 2023/24. ⁠Publichealthscotland

2024-2026 data for 15-34 is not yet avaiiable