Marie
To receive the Premiums you need to be eligible for Income Related ESA in addition to your existing ESA(CB). ESA(IR is dependant on your household income, your savings and assets, and any hours that your partner works. See
Asset and savings rule for ESA(IR) 24 hour work rule for ESA(IR) If you think that you are entitled to ESA(IR) then contact the DWP office dealing with your ESA and ask for an ESA3 to be sent this will allow the DWP to see whether you are not.
Gordon