Interesting, I think it just fools IE into thinking it's a redirect, as if you check the Back button before the Toms Guide (or US Toms Hardware) loads, the tv-advert.net line doesn't appear, but when it finishes loading, it does.
Looks like Toms Hardware Guide UK isn't actually affected, it's just the dodgy sister companies that are pairing with dodgy advertising companies that are happy hosting very dodgy adverts, and of course being linked here without a warning.