The Petersham in Covent Garden (along with Petersham Nurseries in Richmond) is founded on sustainable principles that ripple throughout everything it does, including its afternoon tea. Each month, it launches a new offering with a charity affiliation, so for every diner, a donation is made to the chosen cause that month. We love the sentiment, and the food is top notch, too. Its 1000 Bamboo Villages Afternoon Tea, for example, raises funds to restore 2 million hectares of degraded land in Indonesia through a village-based bamboo industry. On the menu, you’ll find Scottish girolle arancini and smoked trout blinis, followed by garden herb scones with lobster and crème fraîche plus malt macaroons.