The chancellor, George Osborne, will be in the Borders today on a business visit.
He'll be talking to local companies in Newton St Boswells about any concerns or questions they have about trading in the local area over the next few months.
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The historic event always takes place on the last Friday in July.
Early enquiries suggest the men may have taken the drug Blue Valium. Two of them remain in hospital with breathing problems.
More than 8,000 people are expected to attend over the three day event, which starts at 7pm tonight.