The key point to remember when claiming any sort of benefit is be completely honest with your claim. You will get caught out should you lie, you will have to repay what you fraudulently claimed and worst of all it will all be added to your criminal record.
I personally do not have a criminal record but that wouldn’t count for anything if I was to be taken to court on a fraudulent benefit claim.
Be honest. Ask DWP/HMRC/Council for help if you are unsure.