I seen a radar image from a youtuber who does the weather, since storms typically pass at the edge of weather patterns, if his image is anywhere near accurate none of the south is going to see a storm, would maybe be northern england at best. Check around 7 min mark. Actually towards the end of the video it shows the 18 may, the edge of the weather pattern is going up through wales which the storm would probably track. That would match up with usual summer Atlantic weather patterns where only the west gets thats weather.