it shall not be affected in its operation by the fact that they are distinct taxes but, so far as is consistent with the Corporation Tax Acts, shall apply in relation to income tax and corporation tax as if they were one tax, so that, in particular, a matter which in a case involving two individuals is relevant for both of them in relation to income tax shall in a like case involving an individual and a company be relevant for him in relation to that tax and for it in relation to corporation tax; and

for that purpose references in any such enactment to a relief from or charge to income tax, or to a specified provision of the Income Tax Acts shall, in the absence of or subject to any express adaptation, be construed as being or including a reference to any corresponding relief from or charge to corporation tax, or to any corresponding provision of the Corporation Tax Acts.