I don't know about the rears Gaz, but the fronts are fairly easy (had to take mine off to get to the washer bottle pump). You'll need some new plastic screw/grommets thingies though as you'll be lucky to remove the arch liner without breaking these. They are really cheap from Ford's (a couple of quid for 10 or so).
Undo the plastic screws (phillips head) that go around the arch and then feed the liner out from around the suspension strut.
:L
Undo the plastic screws (phillips head) that go around the arch and then feed the liner out from around the suspension strut.
:L