Spectators gathered for the five-day rowing spectacular that is the Henley Royal Regatta, on the River Thames
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Crews also readied themselves, with racing starting at 09:00 BST. Oxford Brookes University's rowers carried their boat across the site to take part in the second race
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The Norwich School rowing team were applauded as they made their way out of the boat tent
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This University of Bath crew won their contest and hugged their opponents afterwards
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The Tabor Academy in Massachusetts, USA, studiously adjusted their oars outside the boat tent
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They are one of many international crews competing
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Competitors warmed up on rowing machines ahead of their races
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Boating blazers are a common sight among the crowds at the event
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Also popular: Moustaches
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The site is a hive of activity, with spectators occasionally having to duck to avoid passing boats
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Numbers are likely to be bigger than ever, with 200,000 people expected
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The regatta was first held in 1839, and apart from two world wars, has been held every year since
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According to the regatta's organisers, the total cost of staging the event is almost £3m each year
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More than 200 races in all will take place at the prestigious event