You can get £89.35 per week Statutory Sick Pay (SSP) if you’re too ill to work. It’s paid by your employer for up to 28 weeks.
You need to qualify for SSP and have been off work sick for 4 or more days in a row (including non-working days).
You can’t get less than the statutory amount. You can get more if your company has a sick pay scheme (or ‘occupational scheme’) - check your employment contract.
There are different sick pay rules for agricultural workers.