One corollary of being a Calcuttan is having a special lens on London. Under a decrepit crust, swathes of central Calcutta still brim with edifices modelled after those in a distant city. This distant city rubs off, through inadvertent daily contact, even on the most incurious Calcuttan.The awareness blooms insidiously, like mould on leather during the rains. Add exposure to history and literature and the mould colony can get quite thick. Throw in the prism of Empire and the growth gets more exuberant and the lens more bilious. Visiting London, for a Calcuttan, is therefore unlike visiting Paris it is never entirely free of baggage. On a recent visit to London I got a sense of how heavy my bags were.