How many trees, how much hedge?
Do you own the land they stand on?
How big (i.e. what diameter are the tree trunks)?
Are they covered by any stewardship schemes or protection orders?
Do you propose replanting anywhere?
Why do you want to remove them? ....... Is there a safety issue, for instance?
The list of questions goes on and on.
Either do it and be damned or be sensible and ask the forestry commision and/or your local council for advice.
p.s. If there are any mature trees, you'll likely need a felling permit unless you can operate under one of the exemptions.