Sandra
I know very little about bankruptcy procedures in Mexico, save to say that there is a process which is heavily administered by the Courts. I think your best bet is to find an Attorney out there for some specific advice. Alternatively, you could write to your creditors in the UK and explain the situation you are in, that you cannot afford even the costs of a bankruptcy petition, and invite them to write off their debts.
There is a new procedure about to be introduced into the UK towards the end of the summer called a Debt Relief Order. This is designed for people who cannot even afford to pay for the costs of bankruptcy, and is only available for persons with debts less than £15,000, disposable income less than £50 and assets less than £300. If you fit this criteria, then maybe better to wait until this is in force and then see if you can file in the UK. You will then be discharged from your debts after one year.
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
For further details contact me at
http://www.melaniegiles.com and view my IVA blog at:
http://melaniegiles.blogs.iva.co.uk