Why kill the hedgerows?

If you are a developer with planners and architects and landscape designers on your payroll why can't you design your new site to incorporate the mature hedgerows especially as the plans show they will kill them and then replace them .. is there any sense in that?

Redbridge and Climate change .. its ok they are putting in electric car charging facilities.

The hedgerows of Billet Road support pollution control, wildlife and are beautiful.