Restricting who ex brings around kids

[9ctwood]

Seeking advice from those with court/mediation experience.

We have a 50/50 mutual custody agreement, but my ex is repeatedly ignoring some agreed stipulation which is about Her ex and mum to not be around her home when kids are there.

Can I prevail in mediation or court around this without coming off like I am just controlling ?

Ex's Mother in law : Known 20+ year drug user and alcohol issues.
I have found out she has been taking coke in front of the kids.
She has taken them for a full week during the summer and now I believe she would have done the same BS because if she can do it with her daughter (ex) I can't see why she wouldn't control herself when in her own home.
I heard it from ex's own mouth that she cannot tell her not to do it but she cannot stop her (what the actual F? Why wouldn't she just tell her she can't come around during the 50% time she has the kids ?)

Ex-Boyfriend: Extensive criminal history, including prison time for drug dealing .
I was concerned early in their relationship as he just seemed a bit off(if you saw him you would understand ) so I did Claire's Law which confirmed domestic abuse history; and also he is legally prohibited from seeing two of his own children and I have no idea why that is . Ex ignored it and said I shouldn't judge people based on their past.

Our agreement was agreed upon when I realised she was till seeing this guy post their split .
Now I just found out that he sometimes visits at night times and one of the evenings our kids were with her (the one I could verify )

NOW THAT SHE HAS IGNORED OUR AGREEMENT & I THINK KIDS AREN'T BEING SAFEGUARDED:
Can I prevail in mediation or court to endure the no contact by these people is enforced ?

I am not saying she cannot date /see her mum etc, I just think they are high risk to our children

It's a genuine safeguarding issue so yes absolutely take it to court. Whilst yes normally you'd have no right to say who she can and can't be brought round the kids, this situation is different. I'd go one step further and ask the court for the kids to live with you full time with mum having supervised access as no suitable parent would think it's alright to have people taking drugs/drug dealers around their child.

Have you got legal advice? This is the third post you've made about the situation that I've read and nobody can really answer these questions for you. You need to pay a lawyer, not rely on free and potentially dodgy legal advice from anyone on mumsnet.

Hey thanks for noting this ,I am actually seeing a solicitor on Tuesday in person . I have been here makings posts just so I don't reveal things that may backfire on me or things that will actually affect the kids and do the total opposite of what I am trying to do .

In your circumstances I would be going to court and asking for full time custody of the children and supervised contact with their mother - these are serious safeguarding concerns. Have you spoken to social services? You need to gather as much evidence as you can.

I did gather evidence from her from but I fear she may raise an issue or the court will about how I got it . I didn't force it out of her ,when she is high or drunk she just overshares or she would pass out and I will just see all these things