CNBC’s Hugh Leask explains how European banking executives are seeking to reassure investors over their exposure to private credit. The comments follow Barclays’ disclosure of a £15 billion exposure, after the lender took an impairment charge of more than £200 million linked to a single borrower. Barclays later attributed the charge to the collapse of mortgage lender MFS. That could prompt regulators across Europe to consider tighter rules on private‑sector lending.