Heh you sure like living on the edge. Hard to know because you havent stated your unis and they all have their own rules. Also you know what happened the first time and what warnings they gave you. Too hard to say. It could vary from an official warning to a fine. They may or may not kick you out of the accommodation, but if they did a rug search with sniffer dogs then someones obviously reported it. Assuming this was the police (as I dont think unis have sniffer digs?), then they could give you a caution an a criminal record from it as well. Hard to say what they will do, but at least your first term hasnt been dull.