dual esa and universal credit

hi I need to no the following I used to be on esa with all of the premiums including severe disability premiums and was on the support group as well I also claim pip as well
I lost my esa due to my severe mental health issues pdd nos order I have 
I could not turn up to the assessments Beacause my issues causes me memory loss and can't remember to do things I suffer great anxiety and stress I have diabetic seizures and have type 2 diabetes 

I was told to sign on to universal credit while trying for my 3rd attempt with the courts with a full letter and medical reports to try and get my esa reinstated

during this time I am applying for the universal severe disability premium 

I have just put in a assessment form to apply for the premiums with a fit note as well

I have also applied for new style esa as well 
and for the premiums as well already sent form in

I lost my esa with severe disability premiums about a month a go or just over 
and I believe I paid in enough national contributions as well 
my question is if
Ifam able to claim dual esa as well as universal credit howdo they work out how much you get from both dual esa and universal credit I will be applying for the esa disability premiums as well what the ratio deduction I would lose from claiming both dual esa and universal credit
or what would you gain from claiming from both need to no asap thanks