Devil's advocating a small bit, if the OP had been given something instantly remunerative instead of redundancy cash, I don't think there would be quite the backlash. For example, if he had been given a fully licensed and insured taxi or some sort of franchise business that brought income in immediately, I don't think there would be a clamour to sell this asset to repay debts - it would be recognised that the asset was the OP's source of income and should be managed as well as possible to provide ongoing income for his family and to service debts. I've never seen a small business owner on here being told to sell off their business assets to pay their debts. But because the OP has cold, hard cash, this is considered fair game. Just something to consider...
Now, where the devil's advocating stops is when you look at the seven month gap since last November and now when the OP is 'in the process of setting up the business'; even if it takes this long to set up a business, a business plan should include reasonable expenses for the owner in the set-up stage - including servicing debt. Setting up a business is not carte blanche to park debts and other responsibilities.