To qualify for Watersure you need to:
People who have one of the following medical conditions will automatically qualify for Watersure, as long as they meet all the other qualifying conditions:
Most suppliers offer this scheme if either you or someone in your household get one of the following benefits:
You don't mention in your post if you are in receipt of a
disability benefit so it’s worth looking at the benefits calculator as
suggested by Sam.
If you are working age and not in receipt of disability
living allowance (DLA) it might be worth considering a claim to a benefit
called personal independence payment (PIP). There is a useful self-assessment
tool for PIP here
Hope that helps and please post back on here if you require
any further advice.