Hi Samantha
Welcome to the forum, you might want to have a look at the following FAQ which explains where everything is
Welcome to Benefits and Work It would depend on what the LEAP letter says. The last one I saw stated that they have review the decision and nothing has changed. The person it was sent to had been awarded enhanced mobility at a Tribunal hearing therefore the LEAP decision did not apply to them.
You may want to contact your local Welfare Rights Organisation who can take all your circumstances into consideration. You can find your local Welfare Rights Organisation to help you with advice by clicking on the link below and putting in your post code, it will then come up with a MAP with a list of agencies.
advicelocal.uk Gary