Posted: 20/05/2015 at 09:32
Nothing to do with being 'politically correct' or not.
All wild birds, their young, their eggs and active nests are protected under UK law.
It is an offence to damage a nest intentionally while it is in use or being built and hedge cutting and tree felling is highly likely to damage nests or cause them to be deserted. The penalty can be a £5,000 fine and possibly imprisonment. This applies to all birds, including pigeons, crows etc.
Some birds' nests are incredibly tiny and impossible to see in a standing conifer.
More info here http://www.trees.org.uk/Help-for-Arborists/Treeworks-and-nesting-birds