You asked

​How many people in the UK are estimated as having a drug addiction?

What is the likelihood of relapse for those who get drug treatment?

What is the estimated overall economic cost to the UK of drug addiction?

What is the average cost of treatment for drug addiction?

On average, how many times does somebody relapse/return for treatment?

What are the main reported causes for drug addiction?

What are the main reported causes for relapse of drug addiction?

We said

​Thank you for your enquiry.

We are responsible for publishing mortality statistics for deaths registered in England and Wales, using the information supplied on the death certificate.

We do not hold any information on drug addiction including its causes and economic cost in UK. We suggest that you contact public health agencies, such a Public Health England, to see whether they hold the information you need.