In article , Chris French and Helen
Johnson writes

The intended law isn't actually banning higher hedges. The intention is
for higher hedges to need planning permission. In the same way as high
fences need planning permission.

Does that apply to new higher hedges or existing ones?

presumably an existing one should be OK, just as we don't start worrying
about breaches of planning regs by builders of earlier generations.
--
Kay Easton

Edward's earthworm page:
http://www.scarboro.demon.co.uk/garden/