If you have claimed Employment and Support Allowance from 3rd April 2017 and you are placed in the Work Related Activity Group (WRAG), meaning that you are deemed able to engage in work related activities, you will only receive the basic level that those in the assessment phase receive.
This does not affect you if your claim started before this date.
This change won't affect:
From 3 April 2017, if you under take undertake 'permitted work' and earn between £20 and £115.20 per week you will no longer have to give up work or stop claiming ESA after 52 weeks.
Read more about changes to Employment Support Allowance here