[21B(1)The Treasury may by regulations make provision for determining for the purposes of paragraph 4A where—U.K.
(a)a source of income is located,
(b)an asset is situated or held, or
(c)activities are wholly or mainly carried on.
[(1A)The Treasury may by regulations make provision for determining for the purposes of paragraph 4AA where—
(a)income is received or transferred,
(b)the proceeds of a disposal are received or transferred, or
(c)assets are transferred.]
(2)Different provision may be made for different cases and for income tax [, capital gains tax and inheritance tax] .
(3)Regulations under this paragraph are to be made by statutory instrument.
(4)An instrument containing regulations under this paragraph is subject to annulment in pursuance of a resolution of the House of Commons.]