Here is the statement given to Channel 4 in response to its latest coverage of the marking of last year's exams:
OCR's top priority at this time is to reassure those taking exams now that our systems have been significantly improved. OCR stands by the six paragraph statement it gave Channel 4 last week. We have a whistleblower policy and a staff code of conduct. We confirm that a supervisor has been suspended pending investigation. To say anything more would prejudice the investigation.
We support the regulator Ofqual's planned review of examination marking and will be glad to share any lessons learnt from last year's mistakes.