Quite intersting to watch from my location (near Compton VOR), several aircraft weaving around the storm cells around 1630. This must have been the same one progressing east bound. BA 777 made one turn followed quickly by a rapid turn to the south just as the CB above me deposited a large bolt of lightning and heavy sounding thunder clap directly ahead of it's path. BA001 was unaffected. Very co-operative ATC it would seem for wx avoidance tracks.