Hi Ribcraft
Can I ask why you want it removed? Is it blocking out your sunlight, or maybe causing you grief of some kind, or was your permission not asked prior to your neighbour having the dish installed.
Maybe you want it removed simply 'because you can'.
I am sure your neighbour did not have his dish installed there deliberately to annoy you, it is probably there because it is the best point for reception.
A Sky dish is a fairly small and inoffensive item these days, and I find it little disheartening that we live in a society where petty mindedness seems to be the norm.
Give your neighbour a break.