When it comes to afternoon tea, the British like nothing more than a sweet treat to go with it. The Hairy Bikers, Dave and Si, set off for the Henley Royal Regatta, and on their journey they fill their hampers with cakes and treats made along the way. But why do the British have such a love affair with teatime treats? In their quest to find out, Dave and Si stop off at a swanky hotel to examine the history and conventions of tea, where they are forced to don suits.