It doesn't pay to be completely honest when you fill out the forms Clive, I know this from experience. Six months after I lost my leg I got DLA (disabilty living allowance), three months later they took it off me as when I filled out the forms for the following year I was too honest and told them I was walking again.
I've never bothered to claim since but one day I'll probably need to do it. You have to fill out the forms like you're having your worst day ever , it's the only way to make them understand if you're struggling.