*acknowledges Snape's acknowledgement by smiling* Good afternoon. [or morning, possibly -- Sirius has been in London for a few hours, but he's also the obsessive, crack of dawn type, so... you know]
So Snape can get here too...
Has this London always been here, then?
*tries to remember when he'd heard that the Professor was able to use owl order, and whether it was only after the Cafe vanished*