My step son has recently been approved for PIP, but he made the claim from our address (was living with us) and has since moved out to a flat share. The assessment took place before he moved out. Does he need to notify the DWP and also would it have changed the assessment that hes now living independently. I'm concerned that he hasn't updated his information and is still claiming not to be able to do a high number of things he does for himself all the time.