6 Receivables 2016 $000 2015 $000 - 2 Accrued revenue 72 29 Total receivables under exchange transactions 72 31 Debtors 3 - Total receivables under non-exchange transactions 3 - 75 31 Receivables under exchange transactions Debtors Receivables under non-exchange transactions Total receivables The carrying value of receivables approximates their fair value. All receivables have been assessed for impairment and there is no impairment. 7 Payables 2016 $000 2015 $000 407 193 34 17 441 210 75 72 - 10 75 82 516 292 Payables under exchange transactions Creditors Revenue received in advance Total payables under exchange transactions Payables under non-exchange transactions PAYE tax payable Grants received subject to conditions Total payables under non-exchange transactions Total payables Annual Report 2016 57