“4. Scope of VAT on taxable supplies (1) VAT shall be charged on any supply of goods or services made in the United Kingdom where it is a taxable supply made by a taxable person in the course or furtherance of a business carried on by him. (2) A taxable supply is a supply of goods or services made in the United Kingdom other than an exempt supply”. (b) Section 24 which states: “24. Input tax and output tax (1) Subject to the following provisions of this section, ‘input tax’, in relation to a taxable person, means the following tax, that is to say – (a) VAT on the supply to him of any goods or services. (c) Section 81 which states: … “81(3) Subject to subsection 1 above, in any case where – (a) an amount is due from the Commissioners to any person under any provision of this Act and (b) that person is liable to pay a sum by way of VAT, penalties, interest, or surcharge, The amount referred to in paragraph (a) above shall be set against the sum referred to in paragraph (b) above and, accordingly to the extent of the set-off, the obligations of the Commissioners and the person concerned shall be discharged”