Hi, my name is Denny35!

I claimed ESA contributions in February 2018
ASSESSMENT 10th August 2018
In Support Group
Backdated payment to 15 May 2018 paid 30 August 2018

Pip Assessment 20 August 2018
Backdated PIP to 5 June 2018 for Enhanced both elements. paid 

ESA 3 claim received by DWP on 14th September for IR top up of Enhanced Disability Premium
Phone call to say I needed to claim UC to gain top up.
Area went UC live July 2018. 
If I was entitled to top up from 14th Weeks ..15 May 2018. then area not live.
Would UC backdate to 15th May?

Thanks for any replies..