The Countess of Wessex will be at this year's Border Union show at Springwood Park in Kelso.
This year the show features more than 500 exhibitors and more than 2000 competitors have entered the various livestock categories. The event, due to start today, is 200 years old this year.
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Trail hunting, where a scent is laid for hounds and the hunt to follow, has been widely practised since the 2005 ban on fox hunting.
Dangerous chemicals stored in a laboratory at the nuclear reprocessing plant have now been detonated by an army bomb disposal team.
Explosives experts were called to the nuclear reprocessing site in Cumbria, to help deal with chemical substances.