When Branson was four or five, while on a vacation to
the county of Devon in England, his Aunt Joyce bet him 10
shillings that he would not be able to learn to swim by
the time that they returned back.
On the way back home, when he spotted a river, he asked
his dad to stop the car and jumped into the river. After a
bit of a struggle, some kicking and splashing and
swallowing water, he soon began to swim downwards.
He had won the bet and received a 10-shilling note.
Most of the days, the seas were rough and despite all his
attempts at splashing around, he was unable to learn.