148 Consideration of complaint.E+W+S
(1)On a complaint under section 146 it shall be for the employer to show [what was the sole or main purpose] for which [he acted or failed to act]
(2)In determining any question whether [the employer acted or failed to act, or the purpose for which he did so], no account shall be taken of any pressure which was exercised on him by calling, organising, procuring or financing a strike or other industrial action, or by threatening to do so; and that question shall be determined as if no such pressure had been exercised.
(3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .