The average UK household has racked up total debts of £55,803, the latest statistics show.
The figure, which includes mortgage debt, has been released by money education charity Credit Action as part of its August debt research.
UK adults owe, on average, £29,536 when mortgages are taken into consideration, according to the statistics that show month-by-month trends.
The total value of purchases made by Britons each day using plastic cards is also on the rise, according to the figures, up from July's total of £1.156 billion to £1.182 billion.
It has been suggested that this could be partly down to the increasing popularity of using debit cards rather than cash. But fears have been raised over the financial security of Britons, as it may also indicate that more people are using credit cards on a day-to-day basis to purchase essential goods.
However, on a more positive note, unemployment was down as the number of people out of a job for longer than 12 months fell by 22,000 from July's figures.