In 2005 I started claiming as a single mother. The claim was legit. However in 2006 I traveled abroad and became ill and ended up staying abroad for several years with my kids. I never notified the benefits office or housing benefit and kept getting my claims paid until 2008. Then I applied for tax credit whilst still living abroad, until I returned to UK in 2011. What are the chances of my being prosecuted if this is found out and is it harder to prosecute historic frauds? Is there a time limit to prosecutions being taken?