No, Sky isn't worth it. I won't have it, but my brother has it at his place for the sport. Whenever I go around to his and flick through the 700 channels (well, it seems like 700 anyway!) it contains the biggest load of old codswallop, usually American codswallop you can imagine.
Anyone who pays £600 a year for ancient films, shopping channels, car chase programmes, truck racing, old soaps,repeats, repeats, repeats, etc, etc, must want their head read.
So, 700 channels, but still I can never find anythind I'd want to watch. Save your £600 and put it to good use in the pub, or spend it on a holiday.