Soul + Grain, London City Airport Landside

Few coffee shops in London open their doors at 5am, but this landside spot by London City Airport does exactly that on weekdays, staying open well into the evening for anyone with a dawn flight to catch. Better still, you don't need a boarding pass to drop in, which makes it as convenient for Canning Town locals as for departing travellers. A glowing 4.8 rating from 171 reviews, along with takeaway, dine-in and step-free access, rounds off a genuinely useful neighbourhood find.