Harman, the party's deputy leader, has appointed government PR stalwart Lyn Bryan as a special adviser on press. Bryan moves from the press office at the Department for Food and Rural
She has also worked as press secretary to former environment secretary Margaret Beckett and Foreign Secretary David Miliband.
Harman has previously employed Anna Healy, the partner of Labour MP John Cruddas, as a special adviser on press. It is not known whether Healy is still working for Harman.
Former deputy leader John Prescott hired Bell Pottinger director Alan Schofield as his media handler in 2005.
Schofield, who has since worked as political correspondent at The Sunday Times and is now freelancing, said: ‘Harriet needs to raise her profile. People need to understand what she's about.