A pleasant surprise. We had been to the café before, but didn't know it was now doing Ethiopian food. Closer than London, particularly now the restaurant in the Africa Centre has shut (with the usual arguing etc. you would expect). Probably best to check before you go, as you might expect the place is a tiny bit random.
Note also that RISC has a Reading Room, in Reading. Almost as good as somewhere having a Barthes Room, a Barth Room, a Baath Room and a Bath Room (after the city).