The latest FOS complaints data has shown Sipps had a higher complaint uphold rate than any other financial product.
Sipp and SSAS Rowanmoor Group has been bought out, it has been announced.
Curtis Banks has continued its Sipp acquisition trail by acquiring 5,000 Sipps - with assets under administration of approximately £630m - from the administrators of European Pensions Management.
The average FSCS compensation payments for a Sipp-related claim increased by 31% in the last financial year.
Sipp and family pension trust operator Rowanmoor Group has promoted Sarah Nightingale to Sipp operations director.