He went on to share a picture of the gallery and equipment which had fallen down.
“It is the craziest weather, thunder, lightning, wind, rain and then massive hail and this is all on the hottest day of the year,” he added.
“Like snow but more like massive hailstones?! I’ve never seen this here in 46 years in Essex. @gretathunberg it’s started.
“I just can’t get my head round it. This is mad.
