Very worried Grandma

Oh dear this is incredibly worrying and sounds as if he’s a complete and utter nutter Please don’t tell me he works for the NHS and whoever he works for he shouldn’t be handing out syringes or any other medical equipment
She definitely needs to see a professional ( social worker, solicitor) about his behaviour
I m so taken aback if they ve been hurt in his care can she be sure he’s not injecting them !! The mind boggles oh this is so awful I hope someone on here will come up with better suggestions than mine

Im with Bluebell, from what I read he is mentally unstable and your daughter must put a stop to living in that environment for herself and childrens safety!

Start keeping a diary of incidents, dates, times etc. Any emails or relevant comments indicating controlling or threatening behaviour, make hard copies if possible. Record phone conversations too. Photograph any injuries the children have.
If he's driving illegally, this can be reported anonymously
www.gov.uk/browse/driving/driving-enforcing-the-law
Try to persuade your daughter to seek help from Social Services and any concerns for her safety and the children's should be reported to the police.
If possible, try to get good legal advice.
We went through this nightmare some years ago. It ended with my child getting full custody of the children and no contact at all with the abusing parent.
My heart goes out to you and I wish you well. X

This sounds dreadful. Were they married and was a custody/access order made as part of the proceedings which can be revisited, or is this just an informal arrangement between unmarried parents?
I would suggest seeing a solicitor specialising in family law in the first instance. It may be possible to get a court order preventing him seeing your daughter or the children as he sounds dangerous and frankly unhinged. I know your daughter doesn’t want to go to court but this isn’t going to resolve itself and she and the children need protection from this man. I certainly wouldn’t allow them to be alone with him after what you’ve said about coming to harm and the potentially lethal matter of the syringe.

She needs to get help ASAP tell her to see a solicitor without delay. If there are any concerns as to his parenting the court can order a contact centre (supervised) contact and make him attend a parenting course. The worry here is that it could be considered that she is failing to protect the children from harm by allowing this unstable man unfettered access to her children. Sorry to sound harsh but she cannot leave this

Forgot to mention that after one incident, I called the police as my child was physically attacked. My child was very angry at the time but now, with hindsight agrees it was the best thing I could have done. It started the ball rolling for resolving the situation once and for all.

I think your daughter needs something in writing my oldest son is divorced from his first wife. And when they split up they went to court and have everything in writing. If he’s as bad has you claim and it’s not just a reason to stop him seeing his kids. then she needs to collect the prove. I say this because my ex daughter inlaw tried to make all these claims about my son and none of them were true it was because Bf she was with at the time didn’t want my son in there life’s. Which we found out when they split up so my son took her to court to make sure it didn’t happen again. and he doesn’t pick my granddaughter at the home he meets her half way. And as both remarried it works for them and from what we have heard from granddaughter her step dad is a control freak. and he would love it if we walked away and that’s not going to happen and my son 8yrs later is still collecting information should he need it in future. Email text message etc all count.

Thank you so much for your comments and concerns. She went to see a solicitor a while back and she said unless the father is not physically or sexually abusing the children he will always be able to have them. This is worrying. I have told her as you said Florentina to write everything down and record phone conversations. She is seeing the doctor on Tuesday and I told her to tell him about this drug he gave her. It must be totally illegal. He did used to work for the NHS but got more money working thru an agency and avoids paying tax. I think she’s worried about getting social services involved in case it backfires against her he is a very good manipulator and tells lies upon lies.

Your daughter has to have legal conditions put in place about access to the children, because as they get older he, and probably they will want to spend time away from the family home and out of her sight.
She must collect firm evidence of the allegations she is making, about drink driving and the syringe he has given her, and the incidents when the children were hurt in his care.
The solicitor was right about a father's access; I know a father convicted and imprisoned for accessing child pornography who is still allowed access to his children.
She has to take action now because the situation won't improve, and if he is a manipulator the children will no doubt succumb to his charm.

Your daughter MUST get a court order. In many places, if he’s on the birth certificate, he’s presumed to have equal custody. This means he could pick up the children and refuse to return them.

I would also call the police and make arrangements for them to pick up the drugs he left and file a report. I shudder to think what would happen if HE called and claimed she had illegal possession of a drug. And you only have his word what’s in it to boot!

Good advice from MercuryQueen