Hi, looking for some adivce, rececived a letter from the compliance operations this week request information re: my tax credits as a single person for the period up to 5 April 2011. Stating that there records show my partner name is living at my address, hand up yes. I'm going to phone them tomorrow to get it over with,but what i need to know how far do they going back. my partner want me tell them he in moving in since being of this year, but i feel they will know it's long, my partner keeps saying they need to prove it, i keep telling they can go into our bank accounts and check. every other information that i have given them in the past has be right the amount i earn, i don't claim child care costs. also i read that they add pently on ,how much would it be,could someone give me some adive before tomorrow. thank you