Ladder use is ALREADY restricted under 2005 WAHR. This is LAW, not a recommendation or regulation - LAW.
The Law states:
Avoidance of risks from work at height.
98. Taking account of the general principles of prevention in Schedule 3 to the Act, an employer
shall—
(a) ensure that work is not carried out at height where it is reasonably practicable to carry out the work safely and without risk to health otherwise than at height,
(b) without prejudice to the generality of paragraph (a), ensure that work is not carried
out at height unless it is reasonably practicable to do so safely and without risk to
health,
(c) where, having regard to paragraphs (a) and (b), it is necessary to carry out work at
height, take suitable and sufficient measures to prevent an employee falling a
distance liable to cause personal injury, including—
(i) ensuring that the work is carried out—
(I) from an existing place of work, or
(II) in the case of obtaining access or egress, by using an existing means of
access or egress,
in compliance with this Part, where it is practicable to do so safely and under
appropriate ergonomic conditions, and
(ii) where it is not practicable for the work to be carried out in accordance with
subparagraph (i), ensuring that suitable and sufficient work equipment, in
compliance with Regulation 100, is provided to prevent a fall occurring,
(d) where the measures taken under paragraph (c) do not eliminate the risk of a fall
occurring—
(i) provide sufficient work equipment, in compliance with Regulation 100, to
minimise the distance of a potential fall and the risk of personal injury, and
(ii) without prejudice to the generality of paragraph (c), provide such additional
training and instruction or take other additional suitable and sufficient
measures to prevent, so far as is practicable, any employee falling a distance
liable to cause personal injury.
The bit in bold is the important bit - basically you shouldn't use ladders if there is another practicable method that will do the job from the ground. If you do, you are breaking the law. If you have any kind of insurance, look at the small print where it says that you are not covered when conducting activities outside the law....
Sky installers, painters etc etc have no practicable alternative method to carry out their job,.. window cleaners do, which is why this law is referred to so often on here.