British Prime Minister Keir Starmer said on Monday that whatever the pressure, Britain would not be dragged into the Iran war and was not supporting a blockade of the Strait of Hormuz.
Speaking to BBC Radio 5 Live, Starmer said it was vital to get the Strait reopened.
"It is, in my view, vital that we get the Strait open and fully open, and that's where we've put all of our efforts in the last few and we'll continue to do so," Starmer said.
His comments came after the US military announced it will begin a blockade of all Iranian ports and coastal areas on Monday, a step down from President Donald Trump 's earlier vow to entirely block the strategic Strait of Hormuz.
The move came after marathon US-Iran ceasefire talks in Pakistan ended without an agreement.