18.— In this Part the definition of “referable amounts in respect of each calendar year or part of a calendar year” in section 19, 20, 21, 22, 23, 24, 25 or 26 shall be read as including—

(a) such money as represents the transfer value of certain amounts in respect of service that are transferred from the European Commission, the European Council, the European Parliament, the European Court of Auditors, the European Economic and Social Committee or Eurocontrol and such money shall be accepted on terms approved by the Minister, or

(b) any other money as represents the transfer value of certain amounts that may be accepted on terms approved by the Minister.