Adfam
http://www.adfam.org.uk/families
Adfam is the only national umbrella organisation working specifically with and for families affected by drugs and alcohol.
Al-anon
http://www.al-anonuk.org.uk
Al-Anon Family Groups provide support to anyone whose life is, or has been, affected by someone else’s drinking, regardless of whether that person is still drinking or not.