This page design is ripped off from Alcoholics Anonymous.

If you are here genuinely looking for their help, they can be found at https://www.alcoholics-anonymous.org.uk/

If you'd prefer to avoid the "higher being" and prayer business in AA's 12 step program, or are concerned about some of the other controversies that have arisen, there are a number of explicitly secular organisations such as https://www.aasecular.org/

Alternatively you could also try the NHS's addiction related resources