Thanks everyone for the advice. Wheels are in motion.

ok, I understand the seriousness of the situation. I've been worried about prosecution, prison etc. I worked out we owe £880 in total but I don't know if they add any extra charges. Thanks again

so telling the council, im assuming we will just have to pay the 25 percent difference over the last 5 years.

Yeah Thanks for that and totally appreciate it.

Hi, Like most people say, we've got ourselves into a bit of a mess and worried. Hopefully you will understand what im trying to say. I moved in with my gf five years ago into her nursing accomodation studio flat which is meant for one person only (stated in contract) so we can't really say I live here as it will be breaking the contract. She receives a single occupancy discount and because the flat is only for one person I don't think we can tell the council that I've been staying here so they can remove the discount. Before I moved in with her I was living in a house share in London and as we started to see each other the house where I was sharing was being sold so I had to move out and thought I'd move in here and didn't think the relationship would last this long. I know it's not an excuse but that was my thinking. Now we are trying to move and buy a house together and worried that everything will come back on us. We are looking to buy a house through barratts homes at the moment but we can only get a large enough mortgage with both our names on the mortgage application. My gf would be the primary applicant on the barratts form and me the secondary, would they do a background check on me or is it just the primary applicant? I've looked at some council tax registration forms where they ask for the primary person name and address and how many people are staying at the property. Would the council ask for my previous address or need my name when registering? I know this is wrong but Im just after some knowledge or advice if any. We are not receiving any benefits and do pay the council tax monthly, I'm just worried regarding any background searches just because of my address. The only thing I can think of doing at the moment is changing my address to a 'care of' to my parents address. Thanks in advance rob