3Where under section 15(3)(a) of this Act an application, on being referred to an authority who have made a tree preservation order, falls to be dealt with under the Town and Country Planning Acts, the provisions of the order and any provisions of the [1962 c. 38.] Town and Country Planning Act 1962 or (for Scotland) the [1947 c. 53.] Town and Country Planning (Scotland) Act 1947 relating to the order shall apply as if the application were an application made to the said authority for consent for the felling of the trees to which the application for a felling licence relates.