There were 94,091 new PPI complaints, a 10% fall compared with the previous period.

For complaints about financial products other than PPI, the number increased to 79,550, a rise of 45%. This largely resulted from the increase in complaints about packaged bank account complaints brought by claims-management companies during this period.

The average uphold rate (where the ombudsman found in the consumer’s favour) over the six month period was 57% – ranging from 5% to 94% across the individual businesses.

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Twenty two financial businesses feature in the complaints data for the first time, meaning that 222 in total had 30 or more cases referred to, and resolved by, the ombudsman service in this period.

Chief ombudsman Caroline Wayman said: “It’s been seven years since the ombudsman first began to publish data about individual financial businesses. “This has coincided with a period of volatility and challenge for much of the financial services sector – and this is still reflected in the data we publish today.

“Complaints about PPI continue to make up over half of our workload. And though the number of new PPI cases has reduced in the first half of this year, the decline has not been as steady or as marked as generally expected. This is as least in part due to the continued high levels of activity by claims managers in this area.”

She said: “Claims managers have also been largely responsible for the substantial increase in complaints about packaged bank accounts, which have driven up our banking workload over this period by two thirds.

“Nobody wants “another PPI ”. This is why we’re working closely with businesses, claims companies and their regulators, to make sure PPI is sorted as fairly and as quickly as possible for everyone involved – and that lessons are learned to prevent anything like this happening again. If we can all achieve this, then the next seven years should be a different story.”