Hi Annie333
We cannot answer your question as we do not have all the facts.
Your UC will be affected with savings over £6k (tariff income)
If as you stated your Dr medical certificate goes back over 3 months then I would guess that you were in the assessment phase (13 weeks) and therefore you would not get a back dated payment.
LCWRA payments usually start at the end of the assment period following the assessment phase.
Gary
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
