It really is a personal choice. However, most debtor's petitions (where you petition your own bankrutpcy) will result in a telephone interview only, whereas creditor's petitions result in a face to face interview.
I chose to petition for my own BR as I didn't want to be waiting for my creditors to do it, I wanted it over as soon as possible. If you are waiting for your creditors to make you BR, don't forget it costs them around £1500 to make you BR, and they may get nothing back for this if you cannot make any payments.
Tomorrow is a mystery, yesterday is history, today is the present, a gift to make the most of.
I was recently made bankrupt by creditors. I was trying to save the money to do this myself but they beat me to it. In the end i saved money as I did not need to pay for it & the cost to the creditors for making me bankrupt will now be added to my bankruptcy