Until recently it was a British thing to sentimentalise our police force and shower them with uncritical affection. Their legendary courtesy, willingness to redirect those who lost their way and their anachronistic uniforms made them seem less threatening than their swaggering overseas counterparts in paramilitary dress equipped with firearms, tear gas and water cannon. In recent decades the police have had to adapt to rising levels of crime and social disorder and now project a much less comforting presence on our streets, clad in battle-dress with Tasers, bodycams and automatic weapons at the ready. In reality the cosy world conjured up in these postcards never really existed and many aspects of police work were carried out in a summary fashion with little regard for the finer points of justice. The days when police cars came fitted with warning bells and minor offences could be dealt with by means of a sharp smack to the head are never going to return.