You should only give back the keys to your property if you're absolutely sure that there's no way you can keep your home. Make sure you speak to an adviser at our Mortgage Debt Advice Service before you take this drastic step.
When your home is repossessed it is usually sold to pay off your debts. This will also happen if you hand over the keys to your home voluntarily. The money you get may not be enough to cover everything you owe.