Unless he speaks Welsh, there's no point in getting S4C any more. When it launched it used to be a useful catchup service for channel 4 as it repeated a lot of C4 stuff later in the week, or even later the same evening. These days it really is a Welsh language channel. The only reason to get the other regional variations would be for the news, as he's on the Welsh side of the border and therefore he won't otherwise know about events affecting health and education which are devolved.
TBH I'd just point a single aerial at Winter Hill and then pick up the Flintshire edition of the Chronicle on a Friday. Top quality publication, that.