A year after opening Chiltern Firehouse is still on everyone’s bucket list. It’s still the place to be seen, and it’s still just as difficult to get a table. André Balazs’ properties tend to have this in common. He’s found the formula for generating the hottest places in town, attracting the well-heeled and far-famed like moths to a flame, and has watched his empire grow with rip-roaring success. Chiltern Firehouse is no different. It’s been ablaze ever since the hotelier turned his attention to London and transformed Marylebone’s beautiful old fire station into the most happening spot in West London. It’s created such a buzz that the building’s gates seem permanently besieged by the paparazzi. As such it’s never out of focus for too…