This is a tapas bar not a restaurant. Find a space and order off the blackboard. I am a big fan of tapas in London and this is the most authentic by a mile. Decent portions (for tapas) of very high quality food. Bit hot as they don't have aircon but superb food and great staff.
Also a big positive, they have the price point spot on. Average £6 a dish - what it should be.
To my mind, best in London