Daisy Stephens
BBC News, South
Competitors and spectators have gathered for the Henley Royal Regatta.
More than 400 international standard races will be run during the prestigious rowing event, which runs from until to Sunday 6 July.
Organisers received 768 entries from 19 nations, including a record 589 domestic entries for the annual event, British Rowing said.
It comes on the hottest day of the year so far in the UK, with organisers relaxing the dress code as a result.
Richard Phelps, chair of the regatta's committee, said: "We have incredible Olympic representation in the premier events with an eye-watering prospect of seeing the best Olympic rowing nations racing side-by-side down the Henley course.
"In addition, we are thrilled by such a large domestic entry, and can't wait to see which junior, student and club crews are crowned victors come Finals Sunday."
