Hi David
It's an odd thing about bankruptcy that people are much more keen to threaten it than actually do it, as they are having to put up money which they have no guarantee of recovering.
Once out of the IVA your creditors can once again pursue you for your debts. Obviously this will be difficult if they can't find you, in which case they will be keeping them warm for you pending your return to the UK.
You could wait until you return to the UK and then go bankrupt, in which case you would be restarting UK life as a bankrupt.
Or, you could bite the bullet now and have it pretty much as far back in the past as possible when you got back to the UK.
If you're not planning on returning to the UK at all, it probably doesn't make a right lot of difference. I think there is a time limit on how long your creditors have got to pursue you, but I don't know if this gets suspended if they can't find you.
-Best
Please view my blog at
www.go4broke.blogs.iva.co.uk
'6 years sticking my head into the Lion's mouth of debt !'