Creditors won't simply stop pursuing debts simply because they know that the debtor has no income, simply because they will have no idea as to whether the debtor might have an alternative way of paying back the money (e.g. by selling property, by equity release, by cashing in a life-assurance policy or by taking a lump sum from their pensions). So they'll take quite a bit of convincing if you're hoping to get them to write-off the debt.
However my own experience of being chased by creditors is that they're not unreasonable if you keep them fully informed of your circumstances. Further, there's plenty of help available from a charity that exists solely to help people in debt, so I suggest that you get in touch with them:
http://www.stepchange.org/