Have had a few conversations about this over the weekend.
Some were staggering, but "justified" because they are on a high income. Others were low, regardless of high income. 1 was no debt whatsoever (she is the most calm and non materialistic funnily enough).
I had 1 friend that was mortified to admit she owed £5k over 3 cards and had a long term well paid job and was losing sleep over it.
Mine? Ive just filled in my Bankruptcy forms....