He said decisions on the remaining vehicles would come in the next one to two years.
Heads backed the report's call, saying decisions on schools should not be made on the basis of one year's results.
He said decisions on how much to use are made by patients' physicians.
So for professionals, Professor Hall said, decisions on merit pay are mostly subjective.
A statement said: "Decisions on invitations were made by the couple jointly.
A British Foreign Office spokesman said: "Decisions on Commonwealth membership are a matter for each member government.
It said decisions on a currency pact were for governments, not civil servants.
Defra's chief scientist Ian Boyd said: "Decisions on the use of neonicotinoids must be based on sound scientific evidence.
Russell Bergeron, a spokesman for the immigration service, said decisions on when to refuse bond were made case by case.
Often, Mr. Norris said, decisions on insuring online operations are not made at the highest levels of a company.
