LONDON: British police issued Prime Minister Rishi Sunak with a fine on Friday for traveling in the backseat of a car without wearing his seat belt while filming a social media clip.This comes as a potentially embarrassing blow as he tries to revive his party’s fortunes.Sunak, who apologized on Thursday for what he called a “brief error of judgment,” filmed a video in the back seat of his car while traveling in the north of England, without wearing a seat belt.It is the second penalty Sunak has received from police after last year they found him to have broken COVID-19 lockdown rules, along with then-prime minister Boris Johnson.The fine represents a new challenge for Sunak, whose Conservative Party trails far behind the opposition Labour Party in the opinion polls, ahead of an election due by January 2025 at the latest.”The prime minister fully accepts this was a mistake and has apologized. He will of course comply with the fixed penalty,” a spokesman from Sunak’s Downing Street office said in a statement.Police in the northern English county of Lancashire confirmed that they had issued a 42-year-old man from London with a penalty notice.Sunak becomes the second prime minister after Johnson to have been fined in such a manner.