UK SMART Recovery is a charity that provides help with addictions. Their groups are run by trained facilitators who use cognitive behaviour therapy (CBT) and motivational tools and techniques to help with problematic behaviour with the following (and others):
The groups are free but some groups ask for a donation to cover room hire etc. Details of meetings are available on their website, there are several in Sheffield. There are also meetings for family and friends of the person with the problematic behaviour.
Several online meetings are available, as well as online meetings for family and friends, see website for details.
Covid update Nov 2020: Groups continue to run online. Times of online meetings are on their website.