Hi Emma
We can't give you an accurate time frame. There seem to be some considerable delays for some claimants and one member today has reported she has been waiting 16 weeks and was told when she queried it from the assessment services that many people had been waiting longer.
Once a review form has been submitted a claimant will always receive a decision letter.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
