Next, we turn to one of London's latest crazes - secret dining. Springing up all over the capital are "pop up restaurants", run by everyone from keen amateurs to award-winning chefs. Blake Pudding from the London Review of Breakfasts takes us to the Bruncheon Club to sample their Eggs Royale. But will the yoke consistency be up to the LRB's high standards? Is a duck egg Hollandaise advisable? And what's in it for the keen couple who invite six strangers into their home every month?
We finish with a bat walk in Hackney Marshes. Perhaps an unlikely activity for a Friday night in a borough more famous for its nightlife than its wildlife, but equipped with bat detector and microphone Ellen Otzen seeks out our enigmatic furry-eared friends as they hoover up insects among the black poplars of the River Lea. Ecologist Alison Fure explains how they use high frequency signals not only to navigate but to communicate with other bats and even express emotion.