“4(2) If they think it necessary for the protection of the revenue, the Commissioners may require a taxable person, as a condition of his supplying or being supplied with goods or services under a taxable supply, to give security, or further security, for the payment of any VAT that is or may become due from – (a) the taxable person, or (b) any person by or to whom relevant goods or services are supplied. 4(4) Security under sub-paragraph (2) above shall be of such amount, and shall be in such manner, as the Commissioners may determine. 4(5) The powers conferred on the Commissioners by sub-paragraph (2) above are without prejudice to their powers under section 48(7).”