Hmm, both these keys in the original spreadsheet are formatted strangely. https://docs.google.com/a/digital.cabinet-office.gov.uk/spreadsheet/ccc?key=0AiSA9tBcfgS1dDlvN19DcTN3YW80ZXd5OTN1aDhHSnc#gid=0  Not sure what the cause is, but I've repaired them now.