Here in Minnesota we have had at least 6 in the past month including a thunder snowstorm, I would call "3 per year" as rare, not fairly often.

Nonsense. I have lived in UK (London) for 13 years, and I'd say I saw on average one thunderstorm a year, and they last just a few minutes [1]. Now back in Italy, it's like every other week during the warmer months.

Anyway, the post provides more information than N=1 anecdotes. UK is just too far north for them.

1: I quite like thunderstorms, and I remember the last time there was one where I lived in N. London. It was a single instance of thunder last autumn, lasted all of 2 minutes. Quite underwhelming to say the least.

There are thunderstorms in the UK and at a least a few in any place per year. But compared to some places further south they are rare.

Incidentally, the UK has the highest rate of tornados per area in the world.

They were almost daily in summer as a kid in Florida. https://www.weather.gov/tbw/RainySeason for reasons. https://climatecenter.fsu.edu/topics/thunderstorms shows I got about 80 per year.

I missed the storms when I moved away. Silicon Valley's weather was so boring.

UK's at least has some variability at a timescale smaller than weekly.