As Frankfurt prepares to host England’s European Championship fixture against Denmark, a piece of stern advice has been issued to supporters: do not jump in the river Main.
The idea of hurling yourself into a tributary of the Rhine is unlikely to be at the forefront of many people’s thinking, especially given the dismal weather that has so for characterised the tournament in Germany. But fans did so at the 2006 World Cup, when England last played in the city, and authorities are leaving no stone unturned in making sure this game passes off without incident.