As part of the bankruptcy process a bankrupt will be specifically asked to "Give details of any assets that you have sold, given away or transferred in the five years before the presentation of your bankruptcy petition." Disclaiming an asset is equivalent to giving away an asset, so any disclaimers in the prior 5 year period will be investigated by the OA, and, if appropriate, would be challenged by the OA. It is a serious offence if you deliberately mislead the OA.
Given the above, you might think that a bankrupt would just have to wait 5 years before adjudicating himself bankrupt to avoid any investigation. However, if the OA finds out about an earlier disclaimer, and that the purpose of the disclaimer was to put the asset beyond the reach of creditors, the OA would be expected to investigate that discalimer. There is no statute of limitations on fraud. (In bankruptcy law, one of the meanings of fraud is deliberate deception to deprive creditors of their legal right.)
Jim Stafford