Every now and again Plod get it wrong. These stupid goons were equipped with two-way radios so they could have asked for more information, but chose not to. So in this case their ignorance and stupidity demands some form action, possibly even a criminal prosecution. Wreckless endangerment of the public, flying close than 50m to people not associated with the event, air piracy etc. if you illegally interfere with aircraft, you must pay the price.