Headed up by former World Barista champion Gwilym Davies, this is the mecca for coffee nerds from around the globe. The spacious, bright and bustling Leather Lane café is also home to the London Barista Resource and Training Centre with tons of equipment for coffee creation. The results are as perfect and professional as it gets in London, and star baristas often come and take a turn behind the bar at cuppings. They have an in-house baker too – order the banana bread or cheesecake for a real treat. And coffee paraphernalia and geeky goods are available for purchase. It may be pricier than some places here, but coffee connoisseurs say it's worth it.