Hi all , need to have a look at the aerial on the rear of the room on my 08 sporting , presumably the back of the headlining has to come down , is that easy ?? Is there any hidden clips ?? Thanks

A little bit PainInTheA$$ job. Expect broken clips.
You must undo 4 probably (don't remember), 2 on the sides, 2 on the top (ceiling), to be able to put there a hand.
Antenna is secured with 22 mm nut.
Replace also a gasket if it is worn out, deteriorated rubber.