Thanks for all the suggestions guys, much appreciated! ITV Yorks SD seems to be fine on 103 Sky, but will try what Ech suggests and add channel to Skybox to explore THAT route etc!
@digicon:- I didn't actually state 'Freesat' mate, but only compared 'Freeview' via arial and ITV HD Yorks via dish mate - but suppose maybe you are calling a 'free' channel on TM5402HD as 'Free-SAT' - which I also mentioned?