Contractors are sometimes concerned about the politics of their FIDIC 1999 Sub-Clause 20.1 notices. Some Contractors may consider that serving Sub-Clause 20.1 notices may send the wrong message, particularly in the honeymoon period when the works have just begun. However, the consequences of failing to serve a timely claim notice are so dire that doubtless the issue is regularly on every Contractor’s mind. The case of Obrascon Huarte Lain SA v Her Majesty's Attorney General for Gibraltar1 in the Technology and Construction Court of England and Wales provided some welcomed relief to many Contractors worldwide who may now attempt to rely on its finding on the timing of claim notices when postponing service of these crucial notices.