You could be entitled to Statutory Sick Pay (SSP) if you are employed. You won’t get it for the first 3 days you’re off sick and the maximum it can be paid for is 28 weeks. If you have had an previous period of sickness with 8 weeks of your injury and paid SSP you will not have to serve the 3 waiting days. That period of sickness will count towards the 28 weeks maximum that SSP can be paid for.

Your employer might pay you more than the statutory amount via contractual or company sick pay. You might get this from your first day off sick. It is important that you follow your employers rules about reporting sickness as if you don’t your employer can refuse to pay you SSP.

Agency workers or casual workers could be entitled to SSP if you are working when injured. If you are self-employed you will not be entitled to SSP. 

https://www.citizensadvice.org.uk/work/sick-leave-and-sick-pay/check-if-you-can-get-sick-pay/