A fibrous self-reinforced composite material comprising (i) a thermoplastic polymer as matrix phase, and a reinforcement phase comprising (ii) a first oriented polymeric ductile fibre having the same type as the matrix phase, wherein said ductile fibre has a failure strain of at least 8%, and (iii) a second high stiffness, brittle fibre, wherein said brittle fibre has a failure strain of less than 4% and wherein said brittle fibres make up less than 30 vol% of the composite material and wherein said brittle fibres are highly dispersed within said composite material by - the ductile fibres and the brittle fibres being organised in an intralayer configuration, and/or - the ductile fibres and the brittle fibres being organised in an interlayer configuration wherein alternatingly a layer of ductile fibres and a layer of brittle fibres is introduced and wherein the thickness of the layer is smaller than 200μm, and wherein the thickness of the layer of brittle fibres is smaller than 125μm times the square root of the ratio (230 GPa / stiffness of the brittle fibre), and/or - the ductile fibres and the brittle fibres being organised in an intrayarn configuration, and wherein said composite material has a stiffness of at least 10 GPa, a tensile strength of at least 250 MPa, and an impact (Izod) strength of at least 2500 J/m. (i) a thermoplastic polymer as matrix phase, and a reinforcement phase comprising (ii) a first oriented polymeric ductile fibre having the same type as the matrix phase, wherein said ductile fibre has a failure strain of at least 8%, and (iii) a second high stiffness, brittle fibre, wherein said brittle fibre has a failure strain of less than 4% and wherein said brittle fibres make up less than 30 vol% of the composite material and wherein said brittle fibres are highly dispersed within said composite material by - the ductile fibres and the brittle fibres being organised in an intralayer configuration, and/or - the ductile fibres and the brittle fibres being organised in an interlayer configuration wherein alternatingly a layer of ductile fibres and a layer of brittle fibres is introduced and wherein the thickness of the layer is smaller than 200μm, and wherein the thickness of the layer of brittle fibres is smaller than 125μm times the square root of the ratio (230 GPa / stiffness of the brittle fibre), and/or - the ductile fibres and the brittle fibres being organised in an intrayarn configuration, and wherein said composite material has a stiffness of at least 10 GPa, a tensile strength of at least 250 MPa, and an impact (Izod) strength of at least 2500 J/m. - the ductile fibres and the brittle fibres being organised in an intralayer configuration, and/or - the ductile fibres and the brittle fibres being organised in an interlayer configuration wherein alternatingly a layer of ductile fibres and a layer of brittle fibres is introduced and wherein the thickness of the layer is smaller than 200μm, and wherein the thickness of the layer of brittle fibres is smaller than 125μm times the square root of the ratio (230 GPa / stiffness of the brittle fibre), and/or - the ductile fibres and the brittle fibres being organised in an intrayarn configuration,