A lightning protection system for a wind turbine blade, the wind turbine blade comprises a root end and a tip end and a longitudinal axis, a pressure side and a suction side, the pressure side and the suction side are the outer faces of the wind turbine blade, and a structural element extending along the longitudinal axis, the structural element is a spar or beam made of fibre reinforced polymer, the lightning protection system comprising: - a first down conductor extending from the tip end to a tip connection block arranged at a predetermined distance from the tip end, the first down conductor being electrically connected with the tip connection block, - a second down conductor extending from the tip connection block between and along the structural element and the pressure side towards a root connection block arranged at the root end, - a third down conductor extending from the tip connection block between and along the structural element and the suction side towards the root connection block, - the second down conductor comprises a first expanded foil or a first mesh and the third down conductor comprises a second expanded foil or a second mesh, the first expanded foil or first mesh and the second expanded foil or second mesh are made of a conductive material, the first expanded foil or first mesh and the second expanded foil or second mesh comprise a plurality of conductive connection points, the conductive connection points are arranged in the vicinity of the tip connection block and the root connection block and are electrically connected with the tip connector block and the root connector block, respectively. the lightning protection system comprising: - a first down conductor extending from the tip end to a tip connection block arranged at a predetermined distance from the tip end, the first down conductor being electrically connected with the tip connection block, - a second down conductor extending from the tip connection block between and along the structural element and the pressure side towards a root connection block arranged at the root end, - a third down conductor extending from the tip connection block between and along the structural element and the suction side towards the root connection block, - the second down conductor comprises a first expanded foil or a first mesh and the third down conductor comprises a second expanded foil or a second mesh, the first expanded foil or first mesh and the second expanded foil or second mesh are made of a conductive material, - a first down conductor extending from the tip end to a tip connection block arranged at a predetermined distance from the tip end, the first down conductor being electrically connected with the tip connection block, - a second down conductor extending from the tip connection block between and along the structural element and the pressure side towards a root connection block arranged at the root end, - a third down conductor extending from the tip connection block between and along the structural element and the suction side towards the root connection block, - the second down conductor comprises a first expanded foil or a first mesh and the third down conductor comprises a second expanded foil or a second mesh, the first expanded foil or first mesh and the second expanded foil or second mesh are made of a conductive material, the first expanded foil or first mesh and the second expanded foil or second mesh comprise a plurality of conductive connection points, the conductive connection points are arranged in the vicinity of the tip connection block and the root connection block and are electrically connected with the tip connector block and the root connector block, respectively.