The actor and presenter follows the river as it winds its way through the Thames valley, stopping off at Henley-on-Thames, and then on towards the palace at Hampton Court. In the village of Clifton Hampden, he tries his hand at sailing a skiff, and later visits Thames Water's most advanced sewage plant. In Henley-on-Thames, Tony attempts to cox a crew from the elite Leander Rowing Club, Britain's most successful sporting team who boast 124 Olympic medals, and at Hampton Court Palace, he boards the gold-encrusted Glorianna, the Queen's Royal Barge that led 1,000 boats down the Thames during Her Majesty's diamond jubilee.