Thanks DX. pardon my ignorance but what is a GOGW?

Am not sure where to start with this but here it goes, hope one of you can be my saviour. I recently applied for a mortgage for purchasing our new home, my application was with HSBC. After doing the necessary checks I was told my application had been declined due to an adverse credit rating. To say I was flabbergasted was an understatement, as I have never missed any payments on my credit cards/council tax etc. After finishing the call I immediately signed up with Noddle to check. To my amazement I found a CCJ had been issued in March this year by United Utilities for what I can only assume is for an outstanding water bill. I checked my bank statements, as I pay by direct debit to UU. The payments were going out as normal. I then returned to Noddle to investigate further. I then noticed that a link had been made to my credit profile from my previous address, my deceased mother's home. I left that house in 2011. The water bill was in my name at the time and my mother was supposed to have changed it but i can only assume due to her poor health prior to her death in 07/2013 that she had not done it. I further assume after her death the bill remained unpaid, though I contacted all other parties after her death, I cannot recall whether UU were in that list. I did not receive any correspondence or contact at my current address to this date. The outstanding amount is GBP392. I have no issue in paying this off but the CCJ is killing me. My mother's house was in the care of the estate agent that was dealing with the sale. I had no reason to go there and to be honest I didnt want to go to that house (i'm sorry but i just could not bear to go to the house without my mum in it ) Is there any way I can get this off my credit file? Having this CCJ removed quickly is imperative if I am to purchase our new home. Any words of advice/guidance will be more than appreciated. I know if a CCj has is settled within a month it disappears, but i only found out about it when I have applied for my mortgage last week. As yet I have not spoke to UU, as I suppose it has been passed on to the courts. One of my friends recommended this forum as he had very good advice given to him, I hope yo can do the same for me Thanks in advance