A method of forming a composite component having a curved body and an integral flange (16, 18) from a pre-form using forming apparatus comprising: a tool comprising a curved body portion having a lay-up surface and a forming assembly comprising a plurality of forming elements each having a lay-up surface and a primary flange-forming surface; and a plurality of filler elements each having a secondary flange-forming surface; the method comprising: providing a pre-form over the lay-up surfaces (110, 120) of the curved body portion and the forming elements of the tool in a layup configuration of the forming assembly; moving the forming elements radially outwardly from the layup configuration to respective forming positions so that the forming elements are circumferentially spaced apart from one another to form gaps therebetween; moving the filler elements radially outwardly to respective forming positions in the circumferential gaps between the forming elements so that the primary and secondary flange-forming surfaces (122, 156) form a substantially continuous flange-forming surface in a forming configuration of the forming assembly; wherein movement of the forming assembly from the layup configuration to the forming configuration causes a region of the pre-form to deform between the continuous flange-forming surface and a counteracting forming surface to form the integral flange (16, 18) of the component. a tool comprising a curved body portion having a lay-up surface and a forming assembly comprising a plurality of forming elements each having a lay-up surface and a primary flange-forming surface; and a plurality of filler elements each having a secondary flange-forming surface; the method comprising: providing a pre-form over the lay-up surfaces (110, 120) of the curved body portion and the forming elements of the tool in a layup configuration of the forming assembly; moving the forming elements radially outwardly from the layup configuration to respective forming positions so that the forming elements are circumferentially spaced apart from one another to form gaps therebetween; moving the filler elements radially outwardly to respective forming positions in the circumferential gaps between the forming elements so that the primary and secondary flange-forming surfaces (122, 156) form a substantially continuous flange-forming surface in a forming configuration of the forming assembly; wherein movement of the forming assembly from the layup configuration to the forming configuration causes a region of the pre-form to deform between the continuous flange-forming surface and a counteracting forming surface to form the integral flange (16, 18) of the component. providing a pre-form over the lay-up surfaces (110, 120) of the curved body portion and the forming elements of the tool in a layup configuration of the forming assembly; moving the forming elements radially outwardly from the layup configuration to respective forming positions so that the forming elements are circumferentially spaced apart from one another to form gaps therebetween; moving the filler elements radially outwardly to respective forming positions in the circumferential gaps between the forming elements so that the primary and secondary flange-forming surfaces (122, 156) form a substantially continuous flange-forming surface in a forming configuration of the forming assembly; wherein movement of the forming assembly from the layup configuration to the forming configuration causes a region of the pre-form to deform between the continuous flange-forming surface and a counteracting forming surface to form the integral flange (16, 18) of the component.