How will the OR know about my payments or assets?
The statement of affairs form you fill in when you go bankrupt asks you about preferences and selling or giving away assets. You can find this in in sections 3.5 and 3.6 of your bankruptcy online forms.
You must answer any questions the Official Receiver asks truthfully.
The OR will also look at your financial history in detail after your bankruptcy, including all your bank accounts, and they can contact any of your creditors for extra information. Being honest about your situation now can prevent further setbacks such as longer restrictions being placed on your bankruptcy.