Hi squirrelang
Thank you for your question, unfortunately cannot give you an answer as you have not said what type of ESA you were claiming. I would assume that you are in receipt of IR ESA but that is only a guess.
I would contact your local Welfare Rights Organisation who can take all your circumstances into consideration to give you an accurate answer; 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