Currently in the UK you cannot file for your own bankruptcy online. There may be websites that contain online forms but these are typically usually private companies used to help you comprehensive the forms. Often they are going to charge a fee for this.
File Bankruptcy Online
Is It Smart To File Bankruptcy Online?
Is It Smart To File Bankruptcy Online?

Currently in the UNITED KINGDOM you cannot file on your own bankruptcy online. There may be websites that have online forms but these are typically usually private companies that you can use to help you comprehensive the forms. Often they are going to charge a fee for this.
How to File for Bankruptcy the Easy Way
Bankruptcy Filing Online Is Easy With a Virtual Bankruptcy Attorney
File Bankruptcy Online