This is going to be a bit technical, but I'll try to make it as simple as possible.
Here is a 2012 paper, "A joint paper by the Federal Deposit Insurance Corporation and the Bank of England" entitled "Resolving Globally Active, Systemically Important, Financial Institutions"
www.bankofengland.co.uk/publications/Doc.../news/2012/nr156.pdf
See point 19:
The introduction of a statutory bail-in resolution tool (the power to write down or convert into equity the liabilities of a failing firm) under the RRD is critical to implementing a whole group resolution of U.K. firms in a way that reduces the risks to financial stability. A bail-in tool would enable the U.K. authorities to recapitalize an institution by allocating losses to its shareholders and unsecured creditors, thereby avoiding the need to split or transfer operating entities.
There is a discussion here of what is meant by the term 'unsecured creditor':
www.collapsingintoconsciousness.com/depo...unsecured-creditors/
Once you put your money in a bank, it is no longer yours. The newest spreading meme in global banking is the concept that you are not a depositor, but are lending your money to the bank and thereby become an “unsecured creditor.” In the event of any kind of banking emergency where you want “your” money, good luck. As an unsecured creditor, you’re gonna be way down on the list.
The CEO of Unicredit Federico Ghizzoni said yesterday that it is “acceptable to confiscate savings to save banks.” He said that the savings which are not guaranteed by any protection or insurance could be used in the future to contribute to the rescue of banks who fail and that uninsured deposits could be used in future bank failures provided global policy makers agree on a common approach.
He called for “a common solution in Europe” saying that the “EU should pass laws identical and shared in different member states”. Indeed he went a step further and called for a global coordination of deposit confiscations to rescue failing banks.
“What we cannot accept is differentiation country by country inside the same area. I would strongly suggest to make this decision not only within Europe but within the Basel Committee, where all countries are represented.
Ghizzoni is also a Member of the Board of Directors of Institute of International Finance in Washington, Member of the International Monetary Conference in Washington and Member of the Institut International d’Etudes Bancaires in Brussels. He attended the powerful Bilderberg Group meeting in Spain in 2010 and he a frequent attendee at Davos.
There is a further discussion of this here:
www.globalresearch.ca/derivatives-manage...y-be-at-risk/5330700
And discussion of similar provisions appearing in multiple nations in a co-ordinated fashion here:
silverdoctors.com/fdic-bank-of-england-c...-ins-for-tbtf-banks/ 
