In large wind turbines, the ability to pitch each blade individually is exploited to reduce blade and rotor loads. A second generation control strategy is IBC, independent blade control, whereby the dynamics of the blade are completely decoupled from the rest of the wind turbine as is the design of the individual blade controller from the design of the turbine full envelope controller. The flexibility and transparency of IBC enables controllers to be designed that target wide range of loads with relatively low pitch activity. As well as diminishing specific disturbances, controllers, inevitably, enhance others. However, IBC can be modified to prevent this by removing at source disturbances from the feedback loop. This paper discusses the advantages and concept of the modified IBC, and presents the development of a model for a single blade, as the design of IBC and modified IBC depends completely on the dynamics of a single blade, aiming to design an individual blade controller to not only achieve the desired sensitivity function and stability of the individual blade system but to also reduce, in this case, the 1P disturbance on blade flap. Thereby demonstrating that the modified IBC removes at source from the feedback loop disturbance(s) that would otherwise be enhanced by the blade controller. The relationship between power spectral density function of the blade flap load and the corresponding sensitivity function is investigated to assess the effectiveness of the controller design. The single blade model is derived algebraically using a Simulink model of a 3-bladed, 5MW Supergen wind turbine provided.