The Spanish ships which entered British waters off Gibraltar acted in an "unlawful" and "dangerous" way, the Foreign Office has said.
"Not only were the actions of the survey vessel unlawful, but it was accompanied by a Spanish Guardia Civil vessel whose dangerous manoeuvring presented a significant safety concern on the waters," Europe minister David Lidington said.
More top news
The pensioner made arrangements with undercover agents to have sex with a nine-year-old boy in California.
Up to 30 people have been found dead in an Italian hotel that was hit by an avalanche following a trio of earthquakes on Wednesday.
Two British athletes have rowed the Atlantic setting a new record for completing what is dubbed the world's toughest row.