""supply" in this Act includes all forms of supply, but not anything done otherwise than for a consideration."
"if a person with knowledge of the facts pays money which he is not in law bound to pay, and in circumstances implying that he is paying it voluntarily to close the transaction, he cannot recover it. Such a payment is in law like a gift, and the transaction cannot thereafter be re-opened "
" The principle of fiscal neutrality must be interpreted as meaning that a difference in treatment for the purposes of value added tax of two supplies of services which are identical or similar from the point of view of the consumer and meet the same needs of the consumer is sufficient to establish an infringement of that principle "