Kaffeine

You'll find yourself on Eastcastle Street, just off Tottenham Court Road, queuing with copywriters and architects who actually know their coffee. Kaffeine does that brilliant thing of taking itself seriously without the pretension—the espresso is properly dialled in, the milk is steamed with actual care, and the single-origins rotate regularly enough that you'll want to keep coming back. The space itself is minimal and intentional, all reclaimed wood and that particular London café energy where everyone's either working on something important or genuinely enjoying their brew. It's exactly the kind of place locals protect fiercely.