The 10 most-regretted purchases

We're all spending less than we were in the days when we got a new credit card through the post every week. However, while we're busy clipping coupons and cutting corners, new research has revealed that we're also blowing £5 billion a year on things we buy and never use.

So what are the worst culprits, and how can we avoid buying things we come to regret later?
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