Question to the Ministry of Justice:

To ask the Secretary of State for Justice, what data his Department holds on the number of prisoners with substance abuse issues (a) before their entry into prison and (b) after their sentence finishes.

We are committed to ensuring all those who need drug treatment in prison have access to a full range of treatment options, including abstinence-based interventions, to support a meaningful recovery from drug dependency.

In 2011, responsibility for health services, including substance misuse treatment, in prisons transferred from the National Offender Management Service to NHS England. Data on the number of prisoners in treatment services is collected via the National Drug Treatment Monitoring System and can be obtained from the Office for Health Improvement and Disparities.

Substance misuse treatment in secure settings: 2020 to 2021 - GOV.UK (www.gov.uk)