Family problems..

It sounds to me as though the lad has got depression and for everyone's sanity I'd have a word with his GP sooner rather than later. Some lads are willing to be helped once given that first step of meeting the GP on a 1 to 1. Unless something is done as a matter of urgency then his mental health will deteriorate as cannabis ( much stronger than it used to be ) will alter his brain irreversibly.

If by any chance he gets ousted out of his home does he have anywhere else to go ?

I should imagine that the OP meant theory test.

Better to say nothing HOTMT then be “snippy” ?

I have no need to mock.
I am impressed that the Provisional Driving Test was passed at the 5th attempt.
Can one of you more enlightened ones advise me how I can sit the Provisional Driving Test. It seems really hard.

HOTMT the OP is asking for help for a serious situation. Why the heck are you mocking her phraseology??

HOMT, your post was immediately after Megan's, hence her comment.
Who were you addressing and why?

talking cannabis induced rubbish.

It may not be just cannabis, or it may be cannabis that has other substances included e.g. stuff that is, or used to be, 'legal highs'.

If your daughter is supporting him financially she needs to withdraw that.
Then he needs to be told to leave and take responsibility for himself.

Oh, here we go again!

megan123, have you got a persecution complex?
The first lines of my post should have been in itallics, but whether it was or not I still fail to see how you could think it was aimed at you.
Perhaps you would be kind enough to explain how you came to your conclusion.

HOTMT
Are you talking to me? I sincerely hope not.

^ cannabis induced rubbish^
What's your excuse?

Heartbreaking to hear. There is help out there, but difficult to access if the person concerned will not co-operate. Something has to be done for the sake of her other children. If it was me I would approach one of these organisations myself and ask for some guidance for your daughter. I hope things improve for you all.

Please give us an update in the months ahead whatsitallabout. I sincerely hope things improve.

I totally agree with other posters. I would ask where he gets his money from for drugs, clothes etc.? He needs to start paying his own way, time this free ride stopped.

I agree with the last two posters, your daughter needs to think about her other children as well. Enabling her son's behaviour is not helping, tough love again.

You daughter needs to have one last sit down talk with him that ends with a 30 day notice - his move out date. This verbal notice needs to be followed up in writing. Following the 30 day period, she then needs to literally kick him out if he's failed to move out. Enabling his behavior will NOT prompt any positive changes.

Smoking cannabis around two younger kids is totally unacceptable and I 'm not surprised that he's taking advantage if she allows that. Tough love needed- for his own sake as well as the youngsters. She's doing no-one any favours!

Is his Dad involved at all? What does your GS want to do? Does he want to change things? He may be suffering from depression. Lads take longer to mature than girls. Is he signing on? If so the job centre should be ensuring he is applying for jobs. If your DD is funding him she needs to gradually withdraw it over a few weeks.He is vulnerable so if there is a way of helping him get work and live at home it may be better. Your DD could get advice from the local drug and alcohol team .Nar -Anon is really for people with problems with narcotics rather than cannabis. Cannabis does not cause a physical dependency but a psychological one so if he stopped it abruptly he would come to no harm. All you can do is support your DD and show your GS you love him. He will need long term support. There isn't a quick fix. Wishing you all the best

He's an adult. The most your daughter can do is kick him out.

Unfortunately, unless he's ready and willing to do so, there's no real way to get him treatment for substance use. You and your daughter may find it helpful to attend Nar-Anon. This is an organization based on AA. It's for people who have a loved one with a substance abuse problem.

Tough love is called for. He should be told that his mother can no longer afford to support him, so he must go out and get a job and pay her £50 a week for his keep or he must move out.

If necessary once he is out she should change the locks. He will either sink or swim. I think that after a short period of thrashing around in the water he will learn how to swim.

Tanith has a wise and strong daughter, because she has a wise and strong mother. Wotsitallabout you must support your daughter when she behaves in a similar manner.

My daughter had a similar scenario with her son, long story short she told him to leave eventually it was very hard but after a traumatic few months he got a job with live in accommodation and he is now training to be a chef and earning. He recently told his Mum that kicking him out was the best thing she’d done making him stand on his own two feet.
I know it sounds harsh but when you are at the end of your tether.