Thanks Graeme, but we rarely get electrical storms on the scale you do!
The two places I have in mind are a beachfront cafe, just around the corner from me (it has a covered walkway all round) and a ruined castle on a hilltop about 5 miles from me. The cafe would be safer but the castle would make for better shots, the downside of the castle is you have to park about 400 yards from it and it is completely open to the elements.