Why is this big news?? this must be a fairly common occurrence throughout England and Europe. Anti-Aircraft projectile?
Stuff like this is relatively common, and these stories act as “filler” for news outlets when there is nothing much else going on. When there is something big going on, you actually get a whole lot of newsworthy stories that hardly come to light as they prioritize whatever they feel generates the most viewership / readership, as they are after all, profit-driven business entities which need to show off their relevance to potential advertisers that pay the bills. This is why on an otherwise decent news website like FoxNews, you get several seemingly pointless stupid stories about controversy in the UK royal family, or some singer or actress who saved a baby turtle or something pointless… Lots of people click on those stories on the website.