A composite laminate comprising: a layup of prepreg plies arranged in a stacking arrangement, each prepreg ply comprising a layer of reinforcement fibres impregnated with a curable matrix resin; and at least one nonwoven veil interleaved or interposed between two adjacent prepreg plies; wherein the nonwoven veil is porous, permeable to liquid, and comprises: (a) intermingled, randomly arranged carbon fibres in the form of a nonwoven structure; (b) fire retardant particles dispersed throughout the nonwoven structure such that the majority of the fire-retardant particles are penetrating through the thickness of the nonwoven structure, said fire retardant particles being selected from particles of: ammonium polyphosphate, ammonium polyphosphate encapsulated within a melamine or melamine-containing resin, polyphosphazene, melamine cyanurate, melamine phosphate, melamine polyphosphate, melamine poly(metal phosphates), metal oxides including aluminium hydroxide (Al(OH) 3 ), alumina trihydrate (ATH), zinc borate, alkali metal silicates; and (c) a polymeric or resinous binder, preferably, in an amount of 5% to 25% by weight based on the total weight of the veil, wherein the nonwoven veil has an areal weight of up to 30 gsm, preferably, 5 gsm to 20 gsm, the weight ratio of fibres in the veil to fire retardant particles is from 2:1 to 1:3, and the fire retardant particles have a mean particle size (d50) from 5 to 35 microns as determined by laser diffraction, according to the method of the description. a layup of prepreg plies arranged in a stacking arrangement, each prepreg ply comprising a layer of reinforcement fibres impregnated with a curable matrix resin; and at least one nonwoven veil interleaved or interposed between two adjacent prepreg plies; wherein the nonwoven veil is porous, permeable to liquid, and comprises: (a) intermingled, randomly arranged carbon fibres in the form of a nonwoven structure; (b) fire retardant particles dispersed throughout the nonwoven structure such that the majority of the fire-retardant particles are penetrating through the thickness of the nonwoven structure, said fire retardant particles being selected from particles of: ammonium polyphosphate, ammonium polyphosphate encapsulated within a melamine or melamine-containing resin, polyphosphazene, melamine cyanurate, melamine phosphate, melamine polyphosphate, melamine poly(metal phosphates), metal oxides including aluminium hydroxide (Al(OH) 3 ), alumina trihydrate (ATH), zinc borate, alkali metal silicates; and (c) a polymeric or resinous binder, preferably, in an amount of 5% to 25% by weight based on the total weight of the veil, (a) intermingled, randomly arranged carbon fibres in the form of a nonwoven structure; (b) fire retardant particles dispersed throughout the nonwoven structure such that the majority of the fire-retardant particles are penetrating through the thickness of the nonwoven structure, said fire retardant particles being selected from particles of: ammonium polyphosphate, ammonium polyphosphate encapsulated within a melamine or melamine-containing resin, polyphosphazene, melamine cyanurate, melamine phosphate, melamine polyphosphate, melamine poly(metal phosphates), metal oxides including aluminium hydroxide (Al(OH) 3 ), alumina trihydrate (ATH), zinc borate, alkali metal silicates; and (c) a polymeric or resinous binder, preferably, in an amount of 5% to 25% by weight based on the total weight of the veil, wherein the nonwoven veil has an areal weight of up to 30 gsm, preferably, 5 gsm to 20 gsm, the weight ratio of fibres in the veil to fire retardant particles is from 2:1 to 1:3, and the fire retardant particles have a mean particle size (d50) from 5 to 35 microns as determined by laser diffraction, according to the method of the description. <EOS>