Peter & Dr Margaret McCann’s vision for 12 Step Treatment in the UK began in 1981 when Peter McCann established the Life Anew Trust, a charity that promoted effective addiction treatment. They would go on to found two of the leading UK addiction treatment centres.

A Family-Run Addiction Treatment Centre

In 1982 Peter McCann began extensive consultation with rehabilitation clinics in the US in order to develop an effective treatment programme.

In particular, he received enormous support and guidance from the directors of the famous Hazelden centre in Minnesota.

In April 1983 Peter & Margaret Ann founded Clouds House, a non-profit drug & alcohol treatment centre in Wiltshire.

33 years of expertise and over 10,000 patients treated

After successfully directing the treatment programme at Clouds for five years, Peter and Margaret Ann moved to Scotland in 1988. Castle Craig was the first treatment centre to bring the 12 step facilitation programme to Scotland.

In the early 1990s, Peter McCann founded the European Addiction Treatment Agency (EATA) which is now the largest membership organisation for the independent drug and alcohol treatment and continuing care (also known as aftercare) sector.

Peter and Margaret Ann have presented at many conferences, written research papers and belong to a number of professional organisations. Dr McCann has served on the Executive of the Medical Council on Alcohol and Peter McCann has been elected a Board Member of the International Council of Alcohol and Addictions.


  • Castle Craig continues to be one of the leading and most innovative addiction clinics in the UK.
  • In 1999 Castle Craig was the first treatment centre to introduce internationally recognised accreditation for all its therapists.
  • We were the first rehab clinic to introduce innovative complementary therapies to its programme including drumming therapy (2003) and hyperbaric oxygen therapy (2008).
  • With over 30 years of experience in the field of addictions, Peter and Margaret McCann have always been willing to lead the way, and they inspire others to follow.