Abstract: The present invention relates to a solid free-flowing particulate laundry detergent composition comprising: (a) from 0.5 wt % to 20 wt % AES particle comprising: (i) from 40 wt % to 60 wt % partially ethoxylated alkyl sulphate anionic detersive surfactant, wherein the partially ethoxylated alkyl sulphate anionic detersive surfactant has a molar average degree of ethoxylation of from 0.8 to 1.2, and wherein the partially ethoxylated alkyl sulphate anionic detersive surfactant has a molar ethoxylation distribution such that: (i.i) from 40 wt % to 50 wt % is unethoxylated, having a degree of ethoxylation of 0; (i.ii) from 20 wt % to 30 wt % has a degree of ethoxylation of 1; (i.iii) from 20 wt % to 40 wt % has a degree of ethoxylation of 2 or greater; (ii) from 20 wt % to 50 wt % salt, wherein the salt is selected from sulphate salt and/or carbonate salt; and (iii) from 10 wt % to 30 wt % silica; and (b) from 0.