I have been dealing with Payplan, they do not charge a fee and all your available money goes to your debts. They only deal with unsecured debts - not mortgage secured loans, overdraft etc. I pay Payplan via standing order a set amount each month which goes towards debts. Most companies have stopped charging now that they have received our Letter of Authority and Statement of Affairs which clearly shows our position. Only one or two still charging but they may pass to Collection Agency. Payplan will call you to work out a sensible budget and then start contacting your creditors. They have an online facility called Justabank where you can register and keep an eye on payments. Eventually all letters will slow but creditors can still contact you under a DMP.
I would not worry as there is little they can do - you can only afford to pay what you can. If you agree what you can afford they have little power in a court and will just look stupid if they take you to court (which I am almost certain they will not). The main thing is to pay your mortgage and other utilities first. If you have say £180+ left per month they should be able to help you. Do not panic. As you sort yourself out you can negotiate with the creditors to pay back say just 20% of your debt in full and final settlement. It is not your fault you are in debt. Everyone has some kind of debt. I am in debt for the first time in my life due to the mess of the banks etc. and my husband's job situation. If you need any further info please ask. Some of our debts are huge but I no longer panic as I know I am at least paying something and not ignoring it. Believe me, I felt very low at one point. Once you understand how these banks and other institutions operate, you will become more relaxed about the situation.