But the OP is not allowed to put up a satellite dish.
It appears to me that SKY have out bid UPC for the rights to (re)broadcast these ITV channels. Its not very fair for the consumer but that is the way the industry and SKY in particular operate.
They are actually "free to air" channels, for anyone who has a satelite receiver they can be received for free along with
HD High definition channels: BBC HD, BBC 1 HD,ITV HD,CH4 HD
CH4,CH4 +1, CH5, BBC 1,2,3,4, (all regions) ITV 1,2,3,4 S4C
Film Four, True movies, Movies4Men
CITV, CBBC,Cbeebies,Pop,Pop Girl, Tiny Pop,Kix
BBC News , Euronews, Aljazeera,CNN
Chartshow TV, Scuzz, Vault Classics,B4U Music,9XM
E4, More 4,CBS Reality, CBS Action ,CBS Drama CBS Reality ,Zone Horror,BET
UPC is very bad value for its basic "service"