Nothing in Parts II to IV shall render unlawful any act done in relation to particular work by any personin, or in connection with—
(a) affording women only, or men only, access to facilities for training which would help to fit them for that work, or
(b) encouraging women only, or men only, to take advantage of opportunities for doing that work,
where it reasonably appears to that personthat at any time within the 12 months immediately preceding the doing of the act there were no persons of the sex in question doing that work in Great Britain, or the number of persons of that sex doing the work in Great Britain was comparatively small.
Where in relation to particular work it reasonably appears to any personthat although the condition for the operation of subsection (1) is not met for the whole of Great Britain it is met for an area within Great Britain, nothing in Parts II to IV shall render unlawful any act done by that personin, or in connection with—
(a) affording persons who are of the sex in question, and who appear likely to take up that work in that area, access to facilities for training which would help to fit them for that work, or
(b) encouraging persons of that sex to take advantage of opportunities in the area for doing that work.
The preceding provisions of this section shall not apply in relation to any discrimination which is rendered unlawful by section 6.