Your not in £8k of dept due to George clothes. You put those down as examples to justify your spends, but come on, extra pair of gloves ain't causing this, extra set of uniform that can come cheap enough. What are you really spending this money on?
Don't want to work more to earn more as the nasty tax man gets it all. Same as they do to all of us. Extra is still extra.
Said you had more spare cash on benefit top up as a single mum. So did I. But guess same as me there has been a lifestyle creep. You kept saying about posters expecting you to have no mortgage. Not once have I seen this suggested. But I do suggest you probably took out the max they would give and it has left you short for the rest of your living costs. You have bought beyond your means.
You somehow think it is better that you use credit cards for essentials than luxury. Not true. Luxury are usually 1 off payments you can budget for. Yours is ongoing.
You say your step children have good jobs, so why is your DH funding them while putting your family further in dept. It's a mad concept.
You say about others having car finance, well they are getting a car out of it and the interest is fixed for the duration of their payments. What have you got to show for it?
Your so deep in it and so set in your mind that this is OK. Sad, but you can't keep blaming the tax man & the banks, this is your doing. There are many people living on or below your salary making it work without the credit cards.
Your DH needs to stop the child's payments as they are as you put it earning well. He needs to get his dependent children out of dept. You want to blame everyone but yourselves.