Had a reply in letter back from the DWP today, saying that they do not owe me any underpayments. As they said they were already over paying me on ESA (CB).
So that brings that to a conclusion for myself, as least I don't owe them any outstanding amounts. Would had been nice if they had owed me some monies every little helps.
Sorry to hear you never received any overpayments , I received a letter on Saturday 1/7 from DWP to say they have paid X amount into bank account and received another letter from DWP explaining (need a degree in something to understand it) the amount on Monday 3/7 ,, im happy with the outcome but took 6 nearly 7 months to get a outcome
Good luck to everyone who is still waiting for there outcome and hope it goes well for you all