Four antipodean government-related entities (GREs), two of which have recently issued AUD bonds, could be affected by Standard & Poor’s (S&P)’s new methodology for assessing the credit quality of the sector. Airservices Australia (AsA) (AAA) seems likely to retain its top rating, while Australia Post (AAA) has been placed on negative credit watch and says it plans dialogue with S&P with a view to securing its own triple-A.