I signed what I believed was a voluntary handover form for the property I owned with my ex but think that it may have included a deed of acknowledgement. I did not realise this but asked the insolvency practitioner who is working on behalf of my OR and she said to sign the form. Am I in trouble?
That really depends on what was in the form. If it was a voluntary repossession form that you signed when you gave the property back to the mortgage company and there was a 'shortfall' section then the mortgage company may argue that you are liable for the shortfall as you signed the form after declaring BR. Whether this would stand up in court or not I don't know.
Do you still have a copy of the form (i.e. a customer copy) or did you have to send the complete form back?