Police want to speak with this person over an incident in Knowle. Police want to speak with this person over an incident in Knowle. POLICE want to speak with this person following an attempted robbery in Knowle. West Midlands Police said a group of friends were sat on a wall outside Swan Yard coffee shop when they were approached by two boys. Anyone with information should contact police on 101 or via Live Chat on the force’s website and quote 20/227548/26.