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The focus here is on cities characterised by their size – their population – and how these change through time. This is simple enough to represent as a series (of cities) plotted with respect to their size at different times on a two dimensional graph but such graphs do not succeed in capturing any relationships between their sizes and their ranks. It is well known that the size of cities with respect to their frequency and hence their rank approximates a ‘power law’, there being very few large cities and very many small cities, which when arranged by size and rank on a two dimensional graph whose axes are logarithmic, manifest a set of points something close to a straight line. What is hard to represent in such systems are changes in size and rank on the same graph. The graphics here illustrate a number of techniques for visualising both the rank and size trends in this data for the UK for the period 1901-2011.