If you know of anyone who is struggling with a loved ones addiction, I know of a great charity that supports people nationwide. The family support programme is remote and they help many families a year. Please see link and fill in the referral and someone will endeavour to respond within 24 hours.
https://www.adaptoxford.org.uk/support
They also provide free treatment to the substance user if they want the support themselves( under the adapt programme on their website)