Just been there, and I have earth-shattering news. Dust off the air raid sirens. He (George, the proprietor) has real Jamaica Blue Mountain. You can watch actual bags of Jamaican Coffee Growers Association beans going into their own grinder. £5 for a one shot espresso. Not bad, considering that JBM beans retail for £100 per kilo in the UK. Very smooth, no aftertaste. The first real JBM I've had since 2006 in Bamboula, the Caribbean restaurant on Acre Lane, which closed down ages ago. His ordinary coffee is Carraro
Premium Blends , and it's good. So I no longer need to leave Brixton to get a coffee.