Fifteen minutes off the Heathrow Express and you could be unfolding a Brompton instead of haggling with a cab. This is the classic "first ride into London" dock — the bridges, the canal at Little Venice, the whole city laid out west to east. One catch, and every rider learns it the hard way: the dock hides behind the station in Sheldon Square, not on the concourse. Drop the map pin before you arrive and save yourself the lost ten minutes everyone else spends circling the building.