The Government Says

Official Statistics: Over-repayment of income contingent loans through PAYE: FY15-16 to 24-25

Official Statistics: Over-repayment of income contingent loans through PAYE: FY15-16 to 24-25
Local copy of Over-Repayment_of_Income_Contingent_Loans_Through_PAYE.pdf
Local copy of Over-repayments_of_ICR_loans_through_PAYE_in_bands_of__250.xlsx

https://www.gov.uk/government/statistics/over-repayment-of-income-contingent-loans-through-paye-fy15-16-to-24-25

seen at 10:05, 19 March in Student Loans Company - Activity on GOV.UK.