The chief rabbi has said Jews in the UK are facing a “sustained campaign of violence and intimidation” after another attempted arson attack on a synagogue in London.The incident at Kenton united synagogue in Harrow, north-west London, on Saturday night caused minor smoke damage to an internal room but no injuries or significant structural damage, according to the Community Security Trust, which monitors antisemitism and provides protection for Jewish communities in the UK.The building is close to a school and children’s playground.Police were seen searching a black SUV nearby on Sunday morning. A large cordon was in place and a...