On Iran and oil tankers

I’m glad the Foreign Secretary thinks it ‘unacceptable’ of Iran to have seized a British-flagged oil tanker in the Straits of Hormuz. But wouldn’t it have been a decent idea to give any British-flagged ships sailing through that tiny strait a naval escort? The risk was always there, ever since we seized an Iranian tanker at Gibraltar. Was the possibility of escorting tankers considered by the government?