A fluid laundry detergent composition comprising: a) an anionic surfactant, b) a polymer deposition aid, wherein the polymer deposition aid comprises a cationic polysaccharide and/or a copolymer, wherein the copolymer comprises: a. a cationic monomer selected from a group consisting N,N-dialkylaminoalkyl methacrylate, N,N-dialkylaminoalkyl acrylate, N,N-dialkylaminoalkyl acrylamide, N,N-dialkylaminoalkylmethacrylamide, their quaternized derivatives, vinylamine and its derivatives, allylamine and its derivatives, vinyl imidazole, quaternized vinyl imidazole and diallyl dialkyl ammonium chloride and mixtures thereof, b. a second monomer selected from a group consisting of: acrylamide, N,N-dialkyl acrylamide, methacrylamide, N,N-dialkylmethacrylamide, C1-C12 alkyl acrylate, C1-C12 hydroxyalkyl acrylate, C1-C12 hydroxyetheralkyl acrylate, C1-C12 alkyl methacrylate, C1-C12 hydroxyalkyl methacrylate, vinyl acetate, vinyl alcohol, vinyl formamide, vinyl acetamide, vinyl alkyl ether, vinyl butyrate and derivatives and mixures thereof, c) an external structuring system which imparts a high shear viscosity at 20 s -1 at 21°C of from 1 to 1500 cps and a viscosity at low shear (0.05 s -1 at 21°C) of greater than 5000 cps, measured using an AR 550 rheometer from TA instruments using a plate steel spindle of 40 mm diameter and a gap size of 500 μm, the high shear viscosity at 20s -1 and low shear viscosity at 0.5 -1 being obtained from a logarithmic shear rate sweep from 0.1s -1 to 25s -1 in 3 minutes time at 21°C, d) from 2 to 7% by weight of the multivalent water-soluble organic builder and/or chelants, and e) from 1% to 45% by weight of water. a) an anionic surfactant, b) a polymer deposition aid, wherein the polymer deposition aid comprises a cationic polysaccharide and/or a copolymer, wherein the copolymer comprises: a. a cationic monomer selected from a group consisting N,N-dialkylaminoalkyl methacrylate, N,N-dialkylaminoalkyl acrylate, N,N-dialkylaminoalkyl acrylamide, N,N-dialkylaminoalkylmethacrylamide, their quaternized derivatives, vinylamine and its derivatives, allylamine and its derivatives, vinyl imidazole, quaternized vinyl imidazole and diallyl dialkyl ammonium chloride and mixtures thereof, b. a second monomer selected from a group consisting of: acrylamide, N,N-dialkyl acrylamide, methacrylamide, N,N-dialkylmethacrylamide, C1-C12 alkyl acrylate, C1-C12 hydroxyalkyl acrylate, C1-C12 hydroxyetheralkyl acrylate, C1-C12 alkyl methacrylate, C1-C12 hydroxyalkyl methacrylate, vinyl acetate, vinyl alcohol, vinyl formamide, vinyl acetamide, vinyl alkyl ether, vinyl butyrate and derivatives and mixures thereof, a. a cationic monomer selected from a group consisting N,N-dialkylaminoalkyl methacrylate, N,N-dialkylaminoalkyl acrylate, N,N-dialkylaminoalkyl acrylamide, N,N-dialkylaminoalkylmethacrylamide, their quaternized derivatives, vinylamine and its derivatives, allylamine and its derivatives, vinyl imidazole, quaternized vinyl imidazole and diallyl dialkyl ammonium chloride and mixtures thereof, b. a second monomer selected from a group consisting of: acrylamide, N,N-dialkyl acrylamide, methacrylamide, N,N-dialkylmethacrylamide, C1-C12 alkyl acrylate, C1-C12 hydroxyalkyl acrylate, C1-C12 hydroxyetheralkyl acrylate, C1-C12 alkyl methacrylate, C1-C12 hydroxyalkyl methacrylate, vinyl acetate, vinyl alcohol, vinyl formamide, vinyl acetamide, vinyl alkyl ether, vinyl butyrate and derivatives and mixures thereof, c) an external structuring system which imparts a high shear viscosity at 20 s -1 at 21°C of from 1 to 1500 cps and a viscosity at low shear (0.05 s -1 at 21°C) of greater than 5000 cps, measured using an AR 550 rheometer from TA instruments using a plate steel spindle of 40 mm diameter and a gap size of 500 μm, the high shear viscosity at 20s -1 and low shear viscosity at 0.5 -1 being obtained from a logarithmic shear rate sweep from 0.1s -1 to 25s -1 in 3 minutes time at 21°C, d) from 2 to 7% by weight of the multivalent water-soluble organic builder and/or chelants, and e) from 1% to 45% by weight of water.