Labour peer said Michael Grade was entitled not to show up to debates . He said the broadcasters could not 'empty chair ' the PM if he did not . But the ex Cabinet minister said Labour could score political points over it . Comes after former BBC chief Cameron slams TV 'bullying ' tactics . The Tory peer said broadcasters could be in breach of impartiality rules . Mr Michael Grade has refused to take part in any TV debate after March .
Labour peer said Cameron was entitled not to show up to debates . He said the broadcasters could not 'empty chair ' the PM if he did not . But the ex Cabinet minister said Labour could score political points over it . Comes after former BBC chief Michael Grade slams TV 'bullying ' tactics . The Tory peer said broadcasters could be in breach of impartiality rules . Mr Cameron has refused to take part in any TV debate after March .