I think gambling addiction is the worst, there is a limit to how much alcohol you can consume and how many drugs you can take, money wise, there is no limit with gambling. Somebody I know, her H took his DC's toys to Cash Convertors
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My DH is a gambler, nearly took us down 4 yrs ago - ended up owing £300k including £30,000 borrowed from a friend
. Gamblers are the biggest manipulators/liars, most deceitful people I know.
You cannot micro manage them, you have to make them responsible for their own mess. My DH had to negotiate with creditors himself, he had to work his butt off to turn the business around and pay creditors, he self excluded himself from betting sites, he went to counselling to understand his self destructive/implusive behaviour. All these things he did himself. BTW it is not recommended for gamblers to enter into IVAs - working to pay off creditors and negotiating with them, themselves, so that they actually "feel" the pain and the consequences of their actions is how it should be IYSWIM. It is also recommended that control of bank accounts/finances is only done in the initial stages of recovery, he will need to control himself. You do need to protect yourself and your DCs.
Like the previous poster, our credit rating is crap, only beginning to be repaired now. And my DH had some slip ups in the first six months as behaviour doesn't change over night.
I, personally, think your DH doesn't have any consequences ATM and therefore I don't think this will end well for you.