MOORS murderer Myra Hindley could win the right to seek her freedom if three other killers defeat the Home Secretary in a key House of Lords appeal which begins today.

One of them, convicted murderer Anthony Anderson is challenging David Blunkett's power to fix tariffs -- minimum periods of detention -- for murderers. If the three win, it could clear the way for Hindley to bring her own case for release.

But Mr Blunkett has made it clear that he would not tolerate such notorious killers being freed, and said he will bring in new laws to prevent it if necessary.

It would also open the way for 260 other inmates whose tariffs were raised by the Home Secretary to have their cases reviewed.

Up to 70 of those have already served more time than originally recommended by their trial judge, and could bring cases arguing they should be set free immediately.