HUGE hailstones the size of grapes and bigger battered Oxfordshire in a freak downpour in August 2016, smashing glass, setting off car alarms and forcing people to run for safety.

Thunder roared across the sky on Sunday, August 29, before the massive chunks of ice pelted the ground, in tune with the Met Office's yellow weather warning which came into effect at 11am.

Derek Holmes in Bayworth near Boars Hill was stunned when he headed to his garden to get tomatoes for lunch to find that the stones had smashed his greenhouse.

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The 53-year-old editor and writer said: "It shows how big the hailstones were and how violent the storm was, it was incredible.

Oxford Mail:

"I was shocked to see it had put a hole in the pane. We have got a conservatory with a plastic roof and it was hammering on that, it was extraordinary.

"They were certainly the size of large marbles and my neighbour's had one the size of a golf ball."

Lucy Bickerton tweeted that the torrential downpour set off a car alarm near her.

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The Met Office had warned that Oxfordshire could experience 'torrential downpours', and it was right.

Families at the Big Feastival near Chipping Norton had to battle the elements to avoid getting soggy burger buns and bruised heads.