In other circumstances, an administrator might decide that the only option is for a firm to go into receivership. The company immediately (and permanently) ceases trading and all of the company's assets pass to the receiver, who then uses them to pay back as much as possible to the creditor. (In many cases that might only be, say, 1p or 2p in the pound).
Sometimes a company will recognise that there's no point in going into administration, and go directly into receivership.
In the UK the term bankruptcy only officially applies to individuals who are insolvent and who hand over their assets to the Official Receiver in order to wipe out their debts. However, the term is used colloquially to refer to a company going into receivership. (In the USA the rough equivalent of 'administration' is 'Chapter 11 bankruptcy', with '(full) bankruptcy' being akin to 'receivership' in the UK).
Chris