Hi Deano, and welcome from me too.
First of all, can I just advise that you do tell your wife what is going on? As you say, she obviously knows something is wrong, and I am sure she will want to help you as much as she can. She will probably be upset that you haven't shared this with her at first, but together you can get through. I kept my husband in the dark at first, but we are now stronger than ever since talking about it.
An IVA or Bankrutptcy could be a possibility, but I recommend that you speak to an IP as soon as possible. Visit
www.iva.com where there are lists of companies. One or two of them post on here and are highly recommended. You could try Melanie Giles, Andy Davie, Vikiw. Their details can be found on the experts page - the link is on the left hand side of the page. Speak to them and they will go through all the options available to you and advise you as to the best one for you.