A significant heatwave is impacting the United Kingdom and France, and is forecast to spread across Europe through the weekend. The UK has issued a red alert for Wednesday and Thursday in southern regions, with temperatures expected to reach 37-40 degrees Celsius in cities like Birmingham and Cardiff. As a precaution, a bridge connecting England and Wales has been closed, and authorities are considering school closures for the next two days. France is experiencing similarly extreme conditions. The heatwave is causing disruption to daily life and prompting preventative measures to ensure public safety. The situation remains under close observation as temperatures continue to rise.