Hi danipatch
When you reach state pension age your CB ESA will stop.
Depending on your circumstances, you maybe able to claim PCG;
www.gov.uk/pension-credit.
I would advise you to seek help from your local Welfare Rights Organisation, who can take all your circumstances into account; 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