Britain's Royal Navy shot down a missile fired at a merchant vessel in the Gulf of Aden by Iranian-backed Houtis, the defence ministry said on Thursday.
The HMS Diamond warship used a Sea Viper missile system to shoot down the missile on Wednesday, the ministry said.
"The UK continues to be at the forefront of the international response to the Iranian-backed Houtis' dangerous attacks on commercial vessels, which have claimed the lives of international mariners," Defence Secretary Grant Shapps said.
"I want to thank the brave crew of HMS Diamond for her vital role in saving innocent lives and protecting international shipping from illegal Houthi attacks."
US and British forces on January 12 fired their first joint strikes aimed at reducing the Houtis' ability to target vessels transiting the key Red Sea trade route. The Houtis say the attacks are in support of Palestinians in the Gaza Strip, where Israel is at war with Hamas.
The Houtis began targeting Red Sea shipping in November.