If you get all the defaults set correctly to the date of the bankruptcy, then they will all fall off 6 years from the bankruptcy date, as the will co-incide with the default dates.
If you do as most people do, and that is accept a little be of leeway with them placing the default (normally a month or two maximum), then the account will fall off at the six year point from the default date, or after the bankruptcy date.
However, by having waited this long it is possible that accounts will have been sold on, and you may find is very much an uphill struggle with some, for example, Barclays have a habit of selling the account on, not closing the CRF entries down, and when you ask them to as they no longer hold the account they tell you to get lost.
Expect some of them to have to go to the ICO.
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Abbreviations used in DQF
My advice is guidance only, if you want the law then consult a lawyer!
(c) All Spelling mistakes are my own design, infringement of them may result me sulking!
As allways many thanks for the advice