"Such incursions are a misguided attempt to maintain and assert Spanish claims that the waters are Spanish," said a FCO spokesman. "However, we have always been confident of UK sovereignty over British Gibraltarian Territorial Waters. Although unlawful Spanish incursions are a violation of sovereignty, they are not an armed attack and are not a threat to UK sovereignty. They do not weaken or undermine the legal basis for British sovereignty. Nor do they change the fact of UK and Gibraltar jurisdiction."