I've been messing around with this though my phone & tablet & figured if the ITV Player & 4OD work on the PS3 through its browser then it might be worth trying. The quality isn't fantastic, but it works (& on the PC too). You need to register with the site to get in, but it's all free & carries all the decent free to view channels. Someone might find it useful.
*EDIT* I've just tried it on the Wii, but it uses Flash & the Wii can't play it.