Harriet Harman's rubbish memory

I'm just watching Prime Minister's Questions and Harriet Harman has attacked the Conservatives for having questions asked by the Senior Member of the Shadow Cabinet not the Shadow Leader of the House.

If Harriet Harman cares to remember when Labour were last in opposition (perhaps not given how pilloried she was by her own side), she will recall that when Tony Blair didn't do Prime Minister's Questions, it wasn't Ann Taylor but John Prescott who stood in for him. Was Harriet Harman complaining then? Or is she so incompetent she thinks the world began in May 1997?

Bring back John Prescott!