"To paraphrase John Lennon, Westminster Cathedral isn't the most famous church in the world, it's not even the most famous church in Westminster. While millions of tourists a year flood through the ticket office of Westminster Abbey, keying numbers in the inexplicably sicky audio guides and gawping through the railings at ancient Kings and Queens, only five minutes down the road stands a neighbour who is seldom included on a pre-planned itinerary. Westminster Cathedral is halfway between Victoria Station and Parliament Square but it might as well be halfway between Venice and Istanbul."