In reply to GSM123:
A couple of good top roping venues are:
Nesscliffe - possibly best crag in the world, if not shropshire. Mostly easy access to the top, usually with convenient trees for anchors. If you’re familiar with southern sandstone you should know the tekkers for protecting the rock. Quarried sandstone with some impressive aretes, corners and walls. Top roping there is accepted as part of the local tradition.
World’s End, Llangollen - again, loads of trees at the top and easy access. Good diverse range of grades and features.