You asked:

Please can you tell me how many people used anabolic steroids in the UK, with a full age breakdown? Please provide this information for years 2014, 2015 and 2016.

We said:

Data on drug use collected from the Crime Survey for England and Wales (CSEW) are available, although we do not hold the exact information you have requested. The information that would be available from the CSEW is estimates of the number of 16-59 year olds resident in households in England and Wales who have used anabolic steroids that were not medically prescribed. This information would not be available for the adult population aged 60 and over, the whole of the UK, or for people who used anabolic steroids that were medically prescribed.

However, the aforementioned data on 16-59 year olds resident in households in England and Wales who have used anabolic steroids (that were not medically prescribed) do not currently exist in the format you have requested and would need to be created. Responsibility for the publication of drug use data from the CSEW lies with the Home Office - for reference, their latest 'Drugs Misuse' publication is available here:

https://www.gov.uk/government/statistics/drug-misuse-findings-from-the-2015-to-2016-csew

If you would like further information on the use of anabolic steroids in the UK, it may be worth contacting NHS Digital.