I am in the same position. I managed to split from my partner two years ago, after 10 years of dealing with the highs/lows, the lies, the huge amounts of money spent on cocaine which then came with huge anxiety and depressive episodes, and everything becoming my fault.
We now have shared child care responsibilities which during the last couple of years, has consisted of him spending weekends with the children.
Now covid has struck, he has now been furloughed and now i have to see him each week and hand over my children, and I still have an underlying fear as to whether he takes drugs, or is coming down from them when he has the children.
I also, thought it was a bit of fun at first when we got together, and stupidly I thought I may be able to save him from his addiction to cocaine and weed.
I have realised you can only help people when they want to be helped.
Legally, I would like to know where I stand in relation to allowing him access, and procedures that can be in place to protect my children when in his care?