Some just about to cross the Channel, whether they make it across the cool water is another thing. GFS seems to have the highest risk to the SE London, where it's hottest, though the current storms seem to be heading towards the south coast between Portsmouth & Brighton.
Here the humid air means that yesterdays prolonged sunshine, (Maximum 21.1C) has been replace by misty low cloud, fog now over the hills.
Graham
Penzance