Posted: 11/12/2016 at 09:11
I do all the necessary hacking of hedges and shrubs in the winter. Maybe not recommended by RHS, (and I'm sure someone will quote you RHS advice) but it works OK for me. Hard work goes well in the cold weather and the birds haven't started nesting.
We had a very tall thick hedge round 2 sides of our back garden. We reduced one side to a reasonable hedge last winter, left the rest for the wildlife. Will complete the job next winter, that way there's permanent shelter for the birds