My income has reduced since I was injured and I am struggling to pay bills

Universal Credit (UC) could help. It is a means-tested benefit for those on low incomes and depending on their circumstances. It can help top up statutory sick pay, occupational sick pay or other benefits. The amount you will be paid depends on factors such as if you are single or in a couple, have children, disability, rental liability, your income and savings.  If you are in receipt of the certain other benefits (known as legacy benefits) you cannot be paid both.

The legacy benefits are housing benefit, tax credits, income support, income related employment support allowance and income related jobseekers allowance. If you are in receipt of one of these then you should request a benefits check as you could be financially worse off by claiming UC. 

https://www.citizensadvice.org.uk/benefits/universal-credit/before-you-apply/what-universal-credit-is/

https://www.gov.uk/universal-credit/eligibility